Update template to v0.3.1

[scverse-bot]

cookiecutter-scverse released v0.3.1.

Changes

Enhancements

• Use Ruff formatting, run Ruff on notebooks by @flying-sheep in Use Ruff formatting, run Ruff on notebooks scverse/cookiecutter-scverse#256

Fixes

• Unpin node version, pre-commit autoupdate by @pre-commit-ci in Unpin node version, pre-commit autoupdate scverse/cookiecutter-scverse#255
• Fix copy without render by @grst in Fix copy without render scverse/cookiecutter-scverse#263
• Fix Ruff deprecations by @flying-sheep in Fix Ruff deprecations scverse/cookiecutter-scverse#267

Documentation

• Update contributing.md by @grst in Update contributing.md scverse/cookiecutter-scverse#259

Full Changelog: scverse/cookiecutter-scverse@v0.3.0...v0.3.1

Additional remarks

• unsubscribe: If you don’t want to receive these PRs in the future,
  add skip: true to template-repos.yml using a PR or,
  if you never want to sync from the template again, delete your .cruft file.
• If there are merge conflicts,
  they either show up inline (>>>>>>>) or a .rej file will have been created for the respective files.
  You need to address these conflicts manually. Make sure to enable pre-commit.ci (see below) to detect such files.
• The scverse template works best when the pre-commit.ci, readthedocs and codecov services are enabled.
  Make sure to activate those apps if you haven't already.