Reduce CI time #9140

Job	Run time
Flake8	16s
Pylint	4m 6s
Mypy	4m 22s
Emirge installation (ubuntu-latest)	5m 31s
Examples (ubuntu-latest)	1h 1m 37s
Emirge installation (macos-latest)	6m 37s
Documentation	5m 11s
Examples (porter)	1h 28m 35s
Production testing (ubuntu-latest)	55m 14s
Production testing (macos-latest)	52m 15s
pydocstyle	12s
Pytest	1h 18m 26s
Production testing (porter)	1h 7m 5s
	7h 9m 27s

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