Implement dumping of processed sarif file #4950

Job	Run time
Diagnostic export (ubuntu-latest, linked)	1m 37s
Diagnostic export (ubuntu-latest, nightly-latest)	1m 0s
Diagnostic export (windows-latest, linked)	3m 9s
Diagnostic export (macos-latest, nightly-latest)	1m 4s
Diagnostic export (macos-latest, linked)	1m 39s
Diagnostic export (windows-latest, nightly-latest)	2m 31s
	11m 0s

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