Fix go cache in gofmt

.github/workflows/gofmt.yml

@@ -14,17 +14,16 @@ jobs:
     name: Run gofmt
     runs-on: ubuntu-latest
     steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v4
+        with:
+          show-progress: false
 
       - name: Set up Go 1.22
         uses: actions/setup-go@v5
         with:
           go-version: "1.22"
-        id: go
-
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v4
-        with:
-          show-progress: false
+          cache-dependency-path: nebula/go.sum
 
       - name: Install goimports
         working-directory: nebula