Fix copier issues, update to 0.9.0

[lkubb]

Hi, this is a very interesting extension! Thought I'd help with the template update since the Renovate PR has many conflicts (because of modified action versions in workflow files).

I noticed python_requires was set to 3.12, but the project actually advertises 3.9 in pyproject.toml. I changed it to 3.10 since that's what the new template version requires. Note that this input version is used in several places, including the pyupgrade hook in pre-commit, which could render the code incompatible with versions lower than 3.12.

Just as a general guidance, I can recommend keeping changes to generated files to the necessary minimum to simplify keeping up with template updates.

What does this PR do?

• Changes python_requires answer from 3.12 to 3.10
• Applies the update to the new template version, which will become required soon inside the org

What issues does this PR fix or reference?

Fixes: #1

Merge requirements satisfied?

[NOTICE] Bug fixes or new features require tests.

• Docs
• Changelog - https://salt-extensions.github.io/salt-extension-copier/topics/documenting/changelog.html#procedure
• Tests written/updated

Commits signed with GPG?

Yes

[codecov]

Welcome to Codecov 🎉

Once you merge this PR into your default branch, you're all set! Codecov will compare coverage reports and display results in all future pull requests.

Thanks for integrating Codecov - We've got you covered ☂️