chore: update golangci-lint-action to v9

Update golangci-lint-action from v6 to v9 to support golangci-lint v2.6.1+

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: MagicalTux

.github/workflows/test.yml

@@ -78,7 +78,7 @@ jobs:
         sudo apt-get install -y libfuse-dev
 
     - name: golangci-lint
-      uses: golangci/golangci-lint-action@v6
+      uses: golangci/golangci-lint-action@v9
       with:
         version: latest
         args: --build-tags "fuse xz zstd"