Fail CI if a default encoding is used

[rmartin16]

Changes

• When CI runs, require an explicit encoding anywhere one is needed

Notes

• Python 3.15 will finally default to UTF-8; however, even then, PYTHONUTF8=0 or -X utf8=0 can disable it
• This is dependent on Use UTF-8 for file reading/writing cookiecutter/cookiecutter#1937

PR Checklist:

• All new features have been tested
• All new features have been documented
• I have read the CONTRIBUTING.md file
• I will abide by the code of conduct

[rmartin16]

more weirdness with cookiecutter releases....2.3.1 is on PyPI but the GitHub release was deleted...(i know it existed at one point because GitHub sent me the release notification...)

GitHub release was restored.

PyPI
GitHub release

[freakboy3742]

👍

Worth noting that this won't do anything on Py3.8 or 3.9, as the warn_default_encoding flag wasn't added until 3.10; but it's a no-op, so it doesn't hurt, and we really only need one version to fail.