Merge pull request #2994 from github/mergeback/changelog/v3.28.21 #4535

Job	Run time
Diagnostic export (ubuntu-latest, linked)	1m 20s
Diagnostic export (windows-latest, nightly-latest)	3m 37s
Diagnostic export (macos-latest, nightly-latest)	1m 23s
Diagnostic export (windows-latest, linked)	3m 47s
Diagnostic export (ubuntu-latest, nightly-latest)	1m 19s
Diagnostic export (macos-latest, linked)	2m 11s
	13m 37s

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