fix: Skip Gitleaks check on forks as they don't have the license key

Author: m1so

.github/workflows/ci.yml

@@ -217,6 +217,8 @@ jobs:
   gitleaks:
     name: Gitleaks check
     runs-on: ubicloud-standard-2
+    # Only run for base repo, not forks
+    if: github.event.pull_request.head.repo.full_name == github.repository || github.event_name != 'pull_request'
     steps:
       - name: Checkout code
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4