CodeQL Unit Testing #3251

Job	Run time
Prepare CodeQL unit test matrix	4s
Run unit tests (cpp, 2.18.4, codeql-cli/v2.18.4, codeql-bundle-v2.18.4, ubuntu-latest-xl, codeql-...	1h 32m 32s
Run unit tests (c, 2.18.4, codeql-cli/v2.18.4, codeql-bundle-v2.18.4, ubuntu-latest-xl, codeql-cl...	33m 51s
Validate test results	4s
	2h 6m 31s

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