[CI] Guard code scanning workflows for main repo only

.github/workflows/codeql.yml

@@ -18,6 +18,7 @@ jobs:
     #   - https://gh.io/using-larger-runners
     # Consider using larger runners for possible analysis time improvements.
     runs-on: 'ubuntu-latest'
+    if: github.repository == 'spring-projects/spring-pulsar'
     timeout-minutes: 360
     permissions:
       actions: read

.github/workflows/trivy-scan.yml

@@ -7,6 +7,7 @@ jobs:
   run_trivy_scan:
     name: Run Trivy Scan
     runs-on: ubuntu-latest
+    if: github.repository == 'spring-projects/spring-pulsar'
     env:
       LOCAL_REPOSITORY_PATH: ./build/publications/repos
     steps: