Merge pull request #6005 from microsoft/ci/fix-signed-commits

fix: disables signed commits as it blocks dependabot

.github/policies/branch-protection.yml

@@ -19,7 +19,7 @@ configuration:
       # Require review from Code Owners. Requires requiredApprovingReviewsCount. boolean
       requireCodeOwnersReview: true
       # Are commits required to be signed. boolean.
-      requiresCommitSignatures: true
+      requiresCommitSignatures: false
       # Are conversations required to be resolved before merging? boolean
       requiresConversationResolution: true
       # Are merge commits prohibited from being pushed to this branch. boolean