Bump credo from 1.6.7 to 1.7.1 #1718

Job	Run time
Test / Generate Dialyzer PLT	6m 29s
Build / Detect Clean Versions	6s
Test / Check Credo	4m 10s
Build / Compile Assets	50s
Test / Check Formatting	2m 17s
Test / Sobelow Job	54s
Test / Run Tests & Submit Coverage	11m 18s
Dependabot / Automerge PRs	4s
Docs / Generate	7m 34s
Test / Gettext Translations up-to-date	5m 33s
Build / Mix Release	7m 4s
Test / Check Dialyzer	6m 27s
Docs / Upload	0s
Build / Docker Build	0s
	52m 46s

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