chore(deps): update golangci/golangci-lint-action action to v9

Author: renovate[bot]

.github/workflows/backend-ci.yaml

@@ -48,7 +48,7 @@ jobs:
         with:
           go-version: "1.21.13"
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@3a919529898de77ec3da873e3063ca4b10e7f5cc # v3
+        uses: golangci/golangci-lint-action@1e7e51e771db61008b38414a730f564565cf7c20 # v9
         with:
           working-directory: ./backend
           skip-cache: true