drop support for ember 4.4

Author: Gaurav0

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
       fail-fast: true
       matrix:
         try-scenario:
-          - ember-lts-4.4
+          #- ember-lts-4.4
           - ember-lts-4.8
           - ember-lts-4.12
           - ember-lts-5.4