CodeQL Unit Testing #4103

Job	Run time
Prepare CodeQL unit test matrix	3s
Run unit tests (c, 2.21.4, codeql-cli/v2.21.4, codeql-bundle-v2.21.4, ubuntu-latest-xl, codeql-cl...	39m 23s
Run unit tests (cpp, 2.21.4, codeql-cli/v2.21.4, codeql-bundle-v2.21.4, ubuntu-latest-xl, codeql-...	1h 52m 39s
Validate test results	10s
	2h 32m 15s

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