Merge branch 'rc/v3.9' into ci/merge-stable-to-master #3995

Job	Run time
Pedantic	4m 50s
Unit tests (ubuntu-latest)	2m 21s
Unit tests (windows-latest)	4m 19s
Unit tests (ubuntu-latest, alpine, --docker --system-ghc --no-install-ghc --flag stack:static)	4m 21s
Unit tests (macos-latest)	3m 1s
	18m 52s

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