🎉 Update README to declare our support for MISRA C++ 2023 🎉 #4688

Job	Run time
Prepare CodeQL unit test matrix	9s
Run unit tests (c, 2.21.4, codeql-cli/v2.21.4, codeql-bundle-v2.21.4, ubuntu-latest-xl, codeql-cl...	42m 40s
Run unit tests (cpp, 2.21.4, codeql-cli/v2.21.4, codeql-bundle-v2.21.4, ubuntu-latest-xl, codeql-...	2h 7m 50s
Validate test results	6s
	2h 50m 45s

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