refactor: use reusable workflow for semgrep (#387) #824

Job	Run time
fossa-scan	1m 35s
compliance-copyrights	23s
meta	6s
pre-commit	38s
test-unit 3.7	2m 1s
test-unit 3.8	1m 21s
test-unit 3.9	1m 20s
test-unit 3.10	1m 21s
test-unit 3.11	1m 18s
semgrep / sast-scan	23s
test-splunk (9.3.0, 51ccf43db5bd, true, false)	3m 47s
test-splunk (9.2.2, d76edf6f0a15, false, false)	3m 52s
test-splunk (9.1.5, 29befd543def, false, true)	3m 52s
publish	1m 22s
	23m 19s

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