build: conditionally run fossa check if dependency files change (#9814)

.github/workflows/license-check.yml

@@ -17,6 +17,24 @@ jobs:
     - name: Generate fossa report
       env:
         FOSSA_API_KEY: ${{ secrets.FOSSA_API_KEY }}
-      run: ./scripts/fossa.sh
+      run: |
+        set -eo pipefail
+        URL="https://api.github.com/repos/${{ github.repository }}/pulls/${{ github.event.pull_request.number }}/files"
+        FILES=$(curl -s -X GET -G $URL | jq -r '.[] | .filename')
+
+        cat<<EOF
+        CHANGED FILES:
+        $FILES
+        
+        EOF
+
+        if [[ "$FILES" =~ ^(.*package*\.json|.*requirements*\.txt)$ ]]; then
+          echo "Detected dependency changes... running fossa check"
+
+          ./scripts/fossa.sh
+        else
+          echo "No dependency changes... skiping fossa check"
+        fi
+      shell: bash
     - name: Run license check
       run: ./scripts/check_license.sh