Don't raise when we can't find a Gemfile #170

Job	Run time
call-workflow-from-shared-config / Type Check	8s
call-workflow-from-shared-config / Linter	7s
call-workflow-from-shared-config / Run tests: Ruby 3.1	1m 15s
call-workflow-from-shared-config / Run tests: Ruby 3.2	19s
call-workflow-from-shared-config / Run tests: Ruby 3.3	14s
call-workflow-from-shared-config / notify_on_failure	0s
	2m 3s

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