Fix setup for linter, too

Author: Lorenz Kästle

.github/workflows/golangci-lint.yml

@@ -10,10 +10,12 @@ jobs:
     name: lint
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v6
+
       - name: Set up Go
         uses: actions/setup-go@v6
-
-      - uses: actions/checkout@v6
+        with:
+          go-version-file: 'go.mod'
 
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v9