Update dependency ember-cli-babel to v8

Author: renovate[bot]

package.json

@@ -39,7 +39,7 @@
     "@glimmer/syntax-0.62.5": "npm:@glimmer/syntax@0.62.5",
     "ember-auto-import": "2.6.3",
     "ember-cli": "4.10.0",
-    "ember-cli-babel": "7.26.11",
+    "ember-cli-babel": "8.1.0",
     "ember-cli-chai": "0.5.0",
     "ember-cli-dependency-checker": "3.3.1",
     "ember-cli-htmlbars": "6.2.0",