Bump dotnet-reportgenerator-globaltool from 5.3.7 to 5.3.8 #867

Job	Run time
cleanup-code (ubuntu-latest)	2m 36s
build-and-test (ubuntu-latest)	6m 47s
cleanup-code (windows-latest)	8m 55s
inspect-code (ubuntu-latest)	5m 52s
build-and-test (windows-latest)	14m 24s
cleanup-code (macos-latest)	2m 0s
inspect-code (windows-latest)	7m 59s
build-and-test (macos-latest)	5m 1s
inspect-code (macos-latest)	4m 32s
publish	6s
	58m 12s

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