Refactor python config handling #2340

Job	Run time
linter	1m 24s
unit test / python 3.8	58s
build packages	18s
unit test / python 3.9	1m 1s
unit test / python 3.10	58s
unit test / python 3.11	46s
verify packages / python 3.8 / ubuntu-latest	1m 2s
verify packages / python 3.9 / ubuntu-latest	1m 13s
verify packages / python 3.10 / ubuntu-latest	1m 15s
verify packages / python 3.11 / ubuntu-latest	1m 31s
verify packages / python 3.8 / macos-latest	1m 22s
verify packages / python 3.9 / macos-latest	53s
verify packages / python 3.10 / macos-latest	1m 23s
verify packages / python 3.11 / macos-latest	58s
verify packages / python 3.8 / windows-latest	4m 6s
verify packages / python 3.9 / windows-latest	3m 37s
verify packages / python 3.10 / windows-latest	3m 24s
verify packages / python 3.11 / windows-latest	2m 49s
	28m 58s

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