Pin 3rd-party actions to SHA1 in .github/workflows/golangci-lint.yml

Author: fbricon

.github/workflows/golangci-lint.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@5c56cd6c9dc07901af25baab6f2b0d9f3b7c3018 #v2
         with:
           version: v1.45.2
           only-new-issues: true