Only run dependency upload on master

Author: headius

.github/workflows/maven.yml

@@ -33,3 +33,4 @@ jobs:
     # Uploads the full dependency graph to GitHub to improve the quality of Dependabot alerts this repository can receive
     - name: Update dependency graph
       uses: advanced-security/maven-dependency-submission-action@571e99aab1055c2e71a1e2309b9691de18d6b7d6
+      if: github.head_ref == 'refs/heads/master'