Update dependency ember-auto-import to v1.8.0

Author: renovate-bot

package.json

@@ -59,7 +59,7 @@
     "broccoli-asset-rev": "3.0.0",
     "ember-a11y-testing": "3.0.2",
     "ember-api-actions": "0.2.9",
-    "ember-auto-import": "1.7.0",
+    "ember-auto-import": "1.8.0",
     "ember-cli": "3.22.0",
     "ember-cli-app-version": "4.0.0",
     "ember-cli-babel": "7.23.0",