DEV - Refactor CI and environment setup #7

Job	Run time
lint	1m 2s
a11y-tests (ubuntu-latest, 3.12)	9s
build PST docs (ubuntu-latest, 3.12)	13s
run-pytest (ubuntu-latest, 3.9)	6s
build PST docs (macos-latest, 3.12)	12s
run-pytest (ubuntu-latest, 3.10)	10s
build PST docs (windows-latest, 3.12)	6s
run-pytest (ubuntu-latest, 3.11)	9s
build PST docs (ubuntu-latest, 3.9, 6.1)	11s
run-pytest (ubuntu-latest, 3.12)	11s
run-pytest (macos-latest, 3.9)	1s
run-pytest (macos-latest, 3.10)	1s
run-pytest (macos-latest, 3.11)	1s
run-pytest (macos-latest, 3.12)	1s
run-pytest (macos-14, 3.10)	8s
run-pytest (macos-14, 3.11)	10s
run-pytest (macos-14, 3.12)	10s
run-pytest (windows-latest, 3.9)	5s
run-pytest (windows-latest, 3.10)	2s
run-pytest (windows-latest, 3.11)	7s
run-pytest (windows-latest, 3.12)	7s
run-pytest (ubuntu-latest, 3.9, 6.1)	7s
run-pytest (ubuntu-latest, 3.12, dev)	10s
lighthouse-audit	1s
profiling	1s
check coverage	1s
	3m 42s

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