ci: use go 1.14

.github/workflows/e2e.yaml

@@ -22,7 +22,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2-beta
         with:
-          go-version: 1.13.x
+          go-version: 1.14.x
       - name: Setup Kubernetes
         uses: engineerd/setup-kind@v0.3.0
       - name: Setup Kustomize
@@ -34,7 +34,11 @@ jobs:
         env:
           KUBEBUILDER_ASSETS: ${{ github.workspace }}/kubebuilder/bin
       - name: Check if working tree is dirty
-        run: git diff --quiet || echo 'run make test and commit changes' && exit 1
+        run: |
+          if [[ $(git diff --stat) != '' ]]; then
+            echo 'run make test and commit changes'
+            exit 1
+          fi
       - name: Build container image
         run: make docker-build IMG=test/source-controller:latest
         env: