Fix test failures in GitHub Actions workflows

- Add envtest setup before running tests
- Use 'make setup-envtest' to install test binaries
- Use 'make test' instead of direct go test
- Ensures proper test environment setup in CI

This fixes the BeforeSuite panic caused by missing envtest binaries.

.github/workflows/pr-validation.yaml

@@ -30,8 +30,11 @@ jobs:
       - name: Run go vet
         run: go vet ./...
 
+      - name: Install envtest binaries
+        run: make setup-envtest
+
       - name: Run tests
-        run: go test -v -race -coverprofile=coverage.out ./...
+        run: make test
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4