exclude dependabot PRs from check

Author: ezhang6811

.github/workflows/pr-build.yml

@@ -19,12 +19,17 @@ jobs:
 
       - name: Check CHANGELOG
         run: |
-          # Check if PR is from pre-release or post-release workflow
+          # Check if PR is from workflows bot or dependabot
           if [[ "${{ github.event.pull_request.user.login }}" == "aws-application-signals-bot" ]]; then
             echo "Skipping check: PR from aws-application-signals-bot"
             exit 0
           fi
           
+          if [[ "${{ github.event.pull_request.user.login }}" == "dependabot[bot]" ]]; then
+            echo "Skipping check: PR from dependabot"
+            exit 0
+          fi
+          
           # Check for Skip Changelog label
           if echo '${{ toJSON(github.event.pull_request.labels.*.name) }}' | jq -r '.[]' | grep -q "Skip Changelog"; then
             echo "Skipping check: Skip Changelog label found"