chore(ci): bump golangci-lint-action to v9

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jdevera

.github/workflows/ci.yml

@@ -36,6 +36,6 @@ jobs:
           go-version-file: go.mod
 
       - name: Lint
-        uses: golangci/golangci-lint-action@v7
+        uses: golangci/golangci-lint-action@v9
         with:
           version: v2.11