Add Ember 4 to CI coverage

Author: mixonic

.github/workflows/ci.yml

@@ -148,9 +148,8 @@ jobs:
             ember-lts-3.20,
             ember-lts-3.24,
             ember-lts-3.28,
-            ember-release,
-            ember-beta,
-            ember-canary,
+            ember-lts-4.4,
+            ember-lts-4.8,
             ember-3.28-with-jquery,
             ember-3.28-classic,
           ]

config/ember-try.js

@@ -61,6 +61,22 @@ module.exports = async function () {
           },
         },
       },
+      {
+        name: 'ember-lts-4.4',
+        npm: {
+          devDependencies: {
+            'ember-source': '~4.4.0',
+          },
+        },
+      },
+      {
+        name: 'ember-lts-4.8',
+        npm: {
+          devDependencies: {
+            'ember-source': '~4.8.0',
+          },
+        },
+      },
       {
         name: 'ember-release',
         npm: {