ci: GolangCI-Lintのバージョンを指定

Author: ynm3n

.github/workflows/backend-ci.yml

@@ -32,6 +32,8 @@ jobs:
 
       - name: Lint Go code with GolangCI-Lint
         uses: golangci/golangci-lint-action@v4
+        with:
+          version: v1.54
 
       - name: Build
         run: go build -v ./...