fix: upgrade peter-evans/create-pull-request v6 -> v7 and disable commit signing

Author: rishabhverma17

.github/workflows/dependencies.yml

@@ -57,7 +57,7 @@ jobs:
 
     - name: Create Pull Request
       if: steps.changes.outputs.has_changes == 'true'
-      uses: peter-evans/create-pull-request@v6
+      uses: peter-evans/create-pull-request@v7
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         commit-message: 'chore: update Go dependencies'
@@ -69,3 +69,4 @@ jobs:
           - Build and tests pass
         branch: chore/update-dependencies
         delete-branch: true
+        sign-commits: false