ci: fix ubuntu version to 22.04 #613

Job	Run time
compliance-copyrights	24s
meta	6s
fossa-scan	50s
pre-commit	20s
test-unit 3.7	1m 16s
test-unit 3.8	20s
test-unit 3.9	21s
test-unit 3.10	27s
test-unit 3.11	20s
semgrep / sast-scan	32s
build	23s
integration-tests (9.3.1, 0b8d769cb912, true, false)	2m 42s
integration-tests (9.2.3, 282efff6aa8b, false, false)	2m 32s
integration-tests (9.1.6, a28f08fac354, false, true)	2m 36s
publish	1m 28s
	14m 37s

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