Bump ember-cli from 3.15.2 to 3.26.1

Bumps [ember-cli](https://github.com/ember-cli/ember-cli) from 3.15.2 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@v3.15.2...v3.26.1)

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

Author: dependabot-preview[bot]

package.json

@@ -38,7 +38,7 @@
     "chai": "^4.3.4",
     "console-ui": "^3.1.2",
     "ember-auto-import": "^1.11.3",
-    "ember-cli": "~3.15.2",
+    "ember-cli": "~3.26.1",
     "ember-cli-blueprint-test-helpers": "^0.19.2",
     "ember-cli-dependency-checker": "^3.2.0",
     "ember-cli-inject-live-reload": "^2.0.1",