Integrate gitlab-ci/fix_ap_fwr_generation and 4 more

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@cf371aca

alphaplan_fwr: Remove obsolete pkg.py artifact

The pkg.py file is no longer deployed by the build process.

See commit
seco-ne/yocto/layers/meta-seconorth-distro@e79e8579

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@b2b43f71

Sourcery: keep "use-named-expression" check disabled

This suggestion aims to reduce code size, but IMO for the expense of
readability for non-python-experts, so we disable it.

See for reference:
https://docs.sourcery.ai/Reference/Python/Default-Rules/use-named-expression/

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@ae8c5423

Sourcery: keep "use-next" check disabled

I don't see any benefit in accepting the refactoring suggestions based
on this rule. IMO it makes the code harder to read, especially for non-
experienced Python developers.

See for reference:
https://docs.sourcery.ai/Reference/Python/Default-Rules/use-next/

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@9462f826

Refactoring: raise specific errors

See for reference:
https://docs.sourcery.ai/Reference/Python/Default-Rules/raise-specific-error/

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@61eb3e11

Switch all strings to formatted string literals (f-strings)

The old printf-style string formatting syntax using '%' is not
recommended anymore. See for reference:
https://docs.python.org/3/library/stdtypes.html#printf-style-string-formatting
https://docs.sourcery.ai/Reference/Python/Default-Rules/replace-interpolation-with-fstring/

Python 3.6 introduced f-strings as a better alternative:
https://docs.python.org/3/reference/lexical_analysis.html#f-strings

Consequently switch to this new syntax for all strings.