ci: update golangci-lint GitHub Action to v8

- Update golangci-lint GitHub Action from v7 to v8

Signed-off-by: appleboy <[email protected]>

Author: appleboy

.github/workflows/testing.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Setup golangci-lint
-        uses: golangci/golangci-lint-action@v7
+        uses: golangci/golangci-lint-action@v8
         with:
           version: v2.0
           args: --verbose