run Embroider tests in CI

Author: jelhan

.github/workflows/ci.yml

@@ -61,8 +61,8 @@ jobs:
           - ember-release
           - ember-beta
           - ember-canary
-          # - embroider-safe
-          # - embroider-optimized
+          - embroider-safe
+          - embroider-optimized
 
     steps:
       - uses: actions/checkout@v3