Set nightly build project.name in pyproject.toml

[maresb]

Closes #1379

It seems that python -m build . ignores the project name from the setuptools.setup function when running setup.py. This commit moves the dynamic project name from setup.py to the nightly.yml workflow, using the dasel command-line tool to modify project.name in pyproject.toml.

I also add a workflow_dispatch trigger to nightly.yml for testing.

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[codecov]

Codecov Report

Merging #1380 (5d798c0) into main (baa6b7f) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

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  Hits        37157    37157           
  Misses      10266    10266           
  Partials     2325     2325