Bump ember-auto-import from 1.5.3 to 1.6.0

Bumps [ember-auto-import](https://github.com/ef4/ember-auto-import) from 1.5.3 to 1.6.0.
- [Release notes](https://github.com/ef4/ember-auto-import/releases)
- [Changelog](https://github.com/ef4/ember-auto-import/blob/master/CHANGELOG.md)
- [Commits](embroider-build/ember-auto-import@v1.5.3...v1.6.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -38,7 +38,7 @@
     "@glimmer/component": "^1.0.0",
     "babel-eslint": "^10.0.3",
     "broccoli-asset-rev": "^3.0.0",
-    "ember-auto-import": "^1.5.3",
+    "ember-auto-import": "^1.6.0",
     "ember-cli": "~3.15.1",
     "ember-cli-dependency-checker": "^3.2.0",
     "ember-cli-inject-live-reload": "^2.0.1",