chore(deps-dev): bump @ember/render-modifiers in /frontend

Bumps [@ember/render-modifiers](https://github.com/emberjs/ember-render-modifiers) from 2.0.5 to 2.1.0.
- [Release notes](https://github.com/emberjs/ember-render-modifiers/releases)
- [Changelog](https://github.com/emberjs/ember-render-modifiers/blob/master/CHANGELOG.md)
- [Commits](emberjs/ember-render-modifiers@v2.0.5...v2.1.0)

---
updated-dependencies:
- dependency-name: "@ember/render-modifiers"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

frontend/package.json

@@ -30,7 +30,7 @@
     "@commitlint/config-conventional": "17.4.4",
     "@ember/jquery": "2.0.0",
     "@ember/optional-features": "2.0.0",
-    "@ember/render-modifiers": "2.0.5",
+    "@ember/render-modifiers": "2.1.0",
     "@ember/test-helpers": "2.9.3",
     "@embroider/macros": "^1.13.1",
     "@embroider/util": "^1.12.0",