CodeQL Unit Testing #3202

Job	Run time
Prepare CodeQL unit test matrix	5s
Run unit tests (cpp, 2.16.6, codeql-cli/v2.16.6, codeql-bundle-v2.16.6, ubuntu-latest-xl, codeql-...	1h 4m 30s
Run unit tests (c, 2.16.6, codeql-cli/v2.16.6, codeql-bundle-v2.16.6, ubuntu-latest-xl, codeql-cl...	25m 4s
Validate test results	8s
	1h 29m 47s

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