Upgrade `github/codeql` dependency to 2.16.6 #3009

Job	Run time
Prepare CodeQL unit test matrix	4s
Run unit tests (cpp, 2.16.6, codeql-cli/v2.16.6, codeql-bundle-v2.16.6, ubuntu-latest-xl, codeql-...	1h 4m 36s
Run unit tests (c, 2.16.6, codeql-cli/v2.16.6, codeql-bundle-v2.16.6, ubuntu-latest-xl, codeql-cl...	26m 7s
Validate test results	5s
	1h 30m 52s

Provide feedback