Cut the conda-lock v3.0.0 release

[maresb]

I want to let everyone know my thinking regarding the release process of conda-lock v3 and also prepare the release notes. Comments welcome!

My current impression is that the recent release of mamba/micromamba v2 has caused a bit of chaos, and that it's prudent to wait for things to stabilize somewhat before cutting this release. (Ideally this specifically means merging #720 and #724.) On the other hand, I expect this release to resolve many outstanding bugs and blockers, so many will want to install as soon as possible.

I'd like to encourage the eager and brave to install from the main branch. Installing via pip should look something like

pipx install --force 'git+https://github.com/conda/conda-lock@main'

where pipx can be replaced with pip and main can be replaced with a current Git SHA.

Alternatively, from an environment.yml, you can add the following to your dependencies

dependencies:
- git  # Only necessary when Git is unavailable at the system level
- pip
- pip:
  - conda-lock @ git+https://github.com/conda/conda-lock@main

First draft release notes, up to and including #633:

[explanation of major changes goes here]

[say something nice about pixi, and link to the migration docs]

TODO: categorize the below, remove bot contributions, combine followups, check the authors, e.g. srilman is missing

What's Changed

• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in [pre-commit.ci] pre-commit autoupdate #633
• Clarify that existing lockfiles are used for relocking by @sfinkens in Clarify that existing lockfiles are used for relocking #632
• Update GHA release workflow to use trusted publishing / OIDC by @maresb in Update GHA release workflow to use trusted publishing / OIDC #631
• Update GitHub Artifact Actions to v4 (major) by @renovate in Update GitHub Artifact Actions to v4 (major) #634
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in [pre-commit.ci] pre-commit autoupdate #635
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in [pre-commit.ci] pre-commit autoupdate #644
• Replace logger.warn w/ logger.warning by @zklaus in Replace logger.warn w/ logger.warning #646
• Correct mistake in basic usage documentation by @sfinkens in Correct mistake in basic usage documentation #647
• Fix failing mypy check by @maresb in Fix failing mypy check #648
• Update pypa/gh-action-pypi-publish action to v1.9.0 by @renovate in Update pypa/gh-action-pypi-publish action to v1.9.0 #650
• Sort BaseLockedDependency.dependencies when alpha-sorting a Lockfile by @peterbygrave in Sort BaseLockedDependency.dependencies when alpha-sorting a Lockfile #654
• Do a strict pkg meta check @ release CD workflow by @webknjaz in Do a strict pkg meta check @ release CD workflow #657
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in [pre-commit.ci] pre-commit autoupdate #651
• 🔄 synced file(s) with conda/infrastructure by @conda-bot in 🔄 synced file(s) with conda/infrastructure #659
• Update pypa/gh-action-pypi-publish action to v1.10.0 by @renovate in Update pypa/gh-action-pypi-publish action to v1.10.0 #665
• Update Poetry to 1.8.3 by @romain-intel in Update Poetry to 1.8.3 #637
• Update peter-evans/create-pull-request action to v7 by @renovate in Update peter-evans/create-pull-request action to v7 #667
• Update pypa/gh-action-pypi-publish action to v1.10.1 by @renovate in Update pypa/gh-action-pypi-publish action to v1.10.1 #666
• Log the solve command (DEBUG) by @maresb in Log the solve command (DEBUG) #662
• Show default values in CLI by @maresb in Show default values in CLI #661
• Update actions/checkout digest to 692973e by @renovate in Update actions/checkout digest to 692973e #640
• Fix vulnerable version of black in test by @maresb in Fix vulnerable version of black in test #680
• Update .gitignore for pixi by @maresb in Update .gitignore for pixi #681
• Split virtual-package repo from LockSpecification by @maresb in Split virtual-package repo from LockSpecification #663
• Add vendoring script by @maresb in Add vendoring script #682
• Fix parsing of Poetry's caret and tilde dependencies by @maresb in Fix parsing of Poetry's caret and tilde dependencies #679
• minor: clean up vendored grayskull by @maresb in minor: clean up vendored grayskull #683
• Update pyproject.toml to fix required dependencies for vendored poetry by @romain-intel in Update pyproject.toml to fix required dependencies for vendored poetry #678
• Add support for PEP 508 environment markers by @maresb in Add support for PEP 508 environment markers #684
• Cleanup vendoring by @maresb in Cleanup vendoring #685
• Add integration tests by @maresb in Add integration tests #686
• Collect test duration data for various runner configurations by @maresb in Collect test duration data for various runner configurations #687
• Use a quicker example for the channel-inversion test by @maresb in Use a quicker example for the channel-inversion test #688
• Split tests into multiple runners with pytest-split by @maresb in Split tests into multiple runners with pytest-split #689
• Improve loading of PyPI mapping by @maresb in Improve loading of PyPI mapping #690
• Simplify pytest GHA workflow by @maresb in Simplify pytest GHA workflow #691
• Fix test that fails when cache is deleted by @maresb in Fix test that fails when cache is deleted #694
• Refactor lock command and fix an edge case by @maresb in Refactor lock command and fix an edge case #695
• Reduce Ubuntu and MacOS runners from 4 to 3 by @maresb in Reduce Ubuntu and MacOS runners from 4 to 3 #696
• Support Multiple Categories for Sub-Dependencies in Lockfile (Rebase Support Multiple Categories for Sub-Dependencies in Lockfile  #390) by @maresb in Support Multiple Categories for Sub-Dependencies in Lockfile (Rebase #390) #697
• Code migrations for Pydantic v2 by @maresb in Code migrations for Pydantic v2 #692
• Relock dependencies by @github-actions in Relock dependencies #610
• Revendor conda by @maresb in Revendor conda #699
• Only run the publish job on releases by @maresb in Only run the publish job on releases #700
• Install conda-lock with pipx in integration tests for better isolation by @maresb in Install conda-lock with pipx in integration tests for better isolation #698
• Refactor to make mapping url explicit and eliminate LookupLoader by @maresb in Refactor to make mapping url explicit and eliminate LookupLoader #703
• Fix erroneous PyPI to Conda dep name conversion for PyPI deps by @maresb in Fix erroneous PyPI to Conda dep name conversion for PyPI deps #701
• Add render-lock-spec subcommand for exporting lock specification to pixi.toml by @maresb in Add render-lock-spec subcommand for exporting lock specification to pixi.toml #664
• Always convert Poetry versions to Conda versions by @maresb in Always convert Poetry versions to Conda versions #704
• Add pixi.toml configuration by @maresb in Add pixi.toml configuration #705
• Write pixi.toml source file list as posix by @maresb in Write pixi.toml source file list as posix #706
• Relock dependencies by @github-actions in Relock dependencies #707
• Echo bash commands during integration test by @maresb in Echo bash commands during integration test #711
• Update pypa/gh-action-pypi-publish action to v1.10.2 by @renovate in Update pypa/gh-action-pypi-publish action to v1.10.2 #710
• Support Micromamba v2 by @maresb in Support Micromamba v2 #713
• Revendor with the official Grayskull released version by @maresb in Revendor with the official Grayskull released version #714
• Support micromamba v2, continued by @maresb in Support micromamba v2, continued #717
• Use JSON version of the default PyPI mapping by @maresb in Use JSON version of the default PyPI mapping #715
• 🤖 Init update.yml workflow by @conda-bot in 🤖 Init update.yml workflow #716
• Update actions/checkout action to v4.2.0 by @renovate in Update actions/checkout action to v4.2.0 #718
• Update mamba-org/setup-micromamba action to v2 by @renovate in Update mamba-org/setup-micromamba action to v2 #719
• Revert one of the micromamba v2 workarounds by @maresb in Revert one of the micromamba v2 workarounds #721
• Add/improve support for Path dependencies and GIT dependencies by @romain-intel in Add/improve support for Path dependencies and GIT dependencies #712
• Update pypa/gh-action-pypi-publish action to v1.10.3 by @renovate in Update pypa/gh-action-pypi-publish action to v1.10.3 #722
• Pin mamba<2 in dev environment and relock dependencies by @maresb in Pin mamba<2 in dev environment and relock dependencies #723

New Contributors

• @zklaus made their first contribution in Replace logger.warn w/ logger.warning #646
• @peterbygrave made their first contribution in Sort BaseLockedDependency.dependencies when alpha-sorting a Lockfile #654
• @webknjaz made their first contribution in Do a strict pkg meta check @ release CD workflow #657