CodeQL Unit Testing #3329

Job	Run time
Prepare CodeQL unit test matrix	5s
Run unit tests (cpp, 2.18.4, codeql-cli/v2.18.4, codeql-bundle-v2.18.4, ubuntu-latest-xl, codeql-...	1h 34m 54s
Run unit tests (c, 2.18.4, codeql-cli/v2.18.4, codeql-bundle-v2.18.4, ubuntu-latest-xl, codeql-cl...	33m 55s
Validate test results	4s
	2h 8m 58s

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