Remove gem avoidance hack #424

Job	Run time
spec (windows-latest ruby 2.7 \| puppet ~> 7.0) / spec	1m 50s
spec (windows-latest ruby 3.2 \| puppet ~> 8.0) / spec	1m 54s
spec (ubuntu-latest ruby 3.2 \| puppet ~> 8.0) / spec	4s
spec (ubuntu-latest ruby 2.7 \| puppet ~> 7.0) / spec	18s
acceptance	0s
	4m 6s

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