Update dependency ember-cli-babel to v8

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "@glimmer/component": "^1.1.2",
     "@glimmer/tracking": "^1.1.2",
     "ember-auto-import": "^2.7.1",
-    "ember-cli-babel": "^7.26.11",
+    "ember-cli-babel": "^8.0.0",
     "ember-cli-htmlbars": "^6.3.0",
     "ember-concurrency": "^3.0.0",
     "ember-gesture-modifiers": "^6.0.1",