4.0.0 - fix `cruft update`, reduce renovate noise

Previously, open_source_license used to be an array (for example: ["MIT License", "MIT"]).
The first value was simply a hack for displaying a nice name when creating the cookiecutter.
The second value (MIT) is the actually used name.

To update from previous versions, please do as follows:

1. Install a previous version of cookiecutter:

pip3 install "cookiecutter<2.3.0"

2. Execute the following command, replacing "MIT" with the respective name:

cruft update --variables-to-update '{\"open_source_license\":\"MIT\"}'

* To find out the name open_source_license you used when creating your project, you can look into your .cruft.json file at the root of the project.

3. Reinstall cookiecutter in an up-to-date version :)

pip3 install "cookiecutter>=2.3.0"

Changes Details

Breaking Change

• fix!: change possible open_source_license values to string-only by @JonasPammer in #141

Other Changes

• ci: change order of CI test matrix by @JonasPammer in #124
• ci: reduce renovate notification and schedule noise by @JonasPammer in #138
• ci: add "[skip pre-commit.ci]" to ensure renovate automerge isnt blocked by @JonasPammer in #139