[rubygems/rubygems] Fix `bundle outdated <GEM>` failing if gems not i… #574

Job	Run time
omnibus compilations, trigger	1s
omnibus compilations, #3	26m 5s
omnibus compilations, #2	31m 35s
omnibus compilations, #4	25m 25s
omnibus compilations, #5	26m 14s
omnibus compilations, #6	27m 4s
omnibus compilations, #1	28m 0s
omnibus compilations, #7	26m 14s
omnibus compilations, #8	27m 25s
omnibus compilations, #9	27m 3s
omnibus compilations, #11	27m 3s
omnibus compilations, #12	24m 15s
omnibus compilations, #10	26m 31s
omnibus compilations, result	1s
	5h 22m 56s

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