ci: add go mod tidy verification step (scaleway#4729)

Author: yfodil

.github/workflows/release.yml

@@ -22,6 +22,11 @@ jobs:
         with:
           go-version: '1.24'
 
+      - name: Verify go.mod is tidy
+        run: |
+          go mod tidy
+          git diff --exit-code
+
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v6
         with:

.github/workflows/unit-tests.yaml

@@ -24,6 +24,10 @@ jobs:
         uses: actions/setup-go@v5
         with:
           go-version: '1.24'
+      - name: Verify go.mod is tidy
+        run: |
+          go mod tidy
+          git diff --exit-code
       - name: Run unit tests
         run: go test ./...
       - name: Execute main binary # Test the runtime for potential panics.