DEV - Refactor CI and environment setup #1

Job	Run time
lint	1m 10s
a11y-tests (ubuntu-latest, 3.12)	2m 37s
build PST docs (ubuntu-latest, 3.12)	33s
run-pytest (ubuntu-latest, 3.9)	1m 20s
build PST docs (macos-latest, 3.12)	1m 9s
run-pytest (ubuntu-latest, 3.10)	1m 16s
build PST docs (windows-latest, 3.12)	1m 33s
run-pytest (ubuntu-latest, 3.11)	1m 14s
build PST docs (ubuntu-latest, 3.9, 61)	49s
run-pytest (ubuntu-latest, 3.12)	1m 22s
run-pytest (macos-latest, 3.9)	1s
run-pytest (macos-latest, 3.10)	1s
run-pytest (macos-latest, 3.11)	1m 4s
run-pytest (macos-latest, 3.12)	1s
run-pytest (macos-14, 3.10)	1m 21s
run-pytest (macos-14, 3.11)	1m 5s
run-pytest (macos-14, 3.12)	1m 23s
run-pytest (windows-latest, 3.9)	1m 16s
run-pytest (windows-latest, 3.10)	1m 15s
run-pytest (windows-latest, 3.11)	1m 14s
run-pytest (windows-latest, 3.12)	1m 14s
run-pytest (ubuntu-latest, 3.9, 61)	1m 15s
run-pytest (ubuntu-latest, 3.12, dev)	1m 21s
check coverage	0s
lighthouse-audit	4m 44s
profile	0s
	30m 18s

Provide feedback