chore(ci): retry on error to prevent potential flakiness

.github/workflows/test-go.yml

@@ -31,10 +31,15 @@ jobs:
         run: go build -v ./...
 
       - name: Unit Test
-        run: |
-          go test -v -shuffle=on -coverpkg "$(go list || go list -m | head -1)/..." -coverprofile cover.out.tmp ./...
-          # remove generate code from coverage results
-          grep -v "zz_generated" cover.out.tmp > cover.out
+        uses: nick-fields/retry@v3
+        with:
+          timeout_minutes: 5
+          max_attempts: 2
+          retry_on: error
+          command: |
+            go test -v -shuffle=on -coverpkg "$(go list || go list -m | head -1)/..." -coverprofile cover.out.tmp ./...
+            # remove generate code from coverage results
+            grep -v "zz_generated" cover.out.tmp > cover.out
 
       - name: Test generating example CRD
         run: hack/generate-crd.sh