Add log group for downloading overlay-base DB #7752

Job	Run time
Ruby analysis (ubuntu-latest, default)	47s
Ruby analysis (ubuntu-latest, linked)	47s
Ruby analysis (macos-latest, default)	49s
Ruby analysis (ubuntu-latest, nightly-latest)	56s
Ruby analysis (macos-latest, linked)	1m 11s
Ruby analysis (macos-latest, nightly-latest)	1m 12s
	5m 42s

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