ci: fix secret scan check failed on main branch (#27)

Author: zoumo

.github/workflows/ci.yaml

@@ -74,6 +74,7 @@ jobs:
   # The TruffleHog OSS Github Action can be used to scan a range of commits for leaked credentials. The action will fail if any results are found.
   # More see: https://github.com/marketplace/actions/trufflehog-oss
   SecretScan:
+    if: ${{ github.ref != 'refs/heads/main' }}
     name: Secret Scan
     runs-on: ubuntu-latest
     steps: