chore(deps-dev): bump ember-fetch from 6.5.1 to 7.0.0

Bumps [ember-fetch](https://github.com/ember-cli/ember-fetch) from 6.5.1 to 7.0.0.
- [Release notes](https://github.com/ember-cli/ember-fetch/releases)
- [Changelog](https://github.com/ember-cli/ember-fetch/blob/master/CHANGELOG.md)
- [Commits](ember-cli/ember-fetch@v6.5.1...v7.0.0)

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

package.json

@@ -82,7 +82,7 @@
     "ember-drag-drop": "^0.6.3",
     "ember-exam": "^2.0.2",
     "ember-export-application-global": "^2.0.0",
-    "ember-fetch": "6.5.1",
+    "ember-fetch": "7.0.0",
     "ember-fullcalendar": "^1.8.0",
     "ember-g-map": "0.0.25",
     "ember-href-to": "3.1.0",