chore(deps-dev): bump ember-cli from 3.20.0 to 3.26.1

Bumps [ember-cli](https://github.com/ember-cli/ember-cli) from 3.20.0 to 3.26.1.
- [Release notes](https://github.com/ember-cli/ember-cli/releases)
- [Changelog](https://github.com/ember-cli/ember-cli/blob/master/CHANGELOG.md)
- [Commits](ember-cli/ember-cli@v3.20.0...v3.26.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -24,7 +24,7 @@
     "babel-eslint": "^10.1.0",
     "broccoli-asset-rev": "^3.0.0",
     "ember-ajax": "^5.0.0",
-    "ember-cli": "~3.20.0",
+    "ember-cli": "~3.26.1",
     "ember-cli-app-version": "^3.2.0",
     "ember-cli-babel": "^7.22.1",
     "ember-cli-dependency-checker": "^3.2.0",