Add ubuntu-slim runner support for lightweight workflows #279

Job	Run time
Test different uses of `upload-sarif` (ubuntu-latest, default, code-quality)	1m 15s
Test different uses of `upload-sarif` (ubuntu-latest, default, code-scanning,code-quality)	1m 25s
Test different uses of `upload-sarif` (ubuntu-latest, default, code-scanning)	1m 11s
	3m 51s

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