Bump ember-cli from 3.6.1 to 3.7.1

Bumps [ember-cli](https://github.com/ember-cli/ember-cli) from 3.6.1 to 3.7.1.
- [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@v3.6.1...v3.7.1)

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

Author: dependabot-support

package.json

@@ -119,7 +119,7 @@
     "broccoli-uglify-sourcemap": "^2.2.0",
     "common-tags": "^1.8.0",
     "dag-map": "^2.0.2",
-    "ember-cli": "^3.6.1",
+    "ember-cli": "^3.7.1",
     "ember-cli-blueprint-test-helpers": "^0.19.2",
     "ember-cli-browserstack": "^0.0.7",
     "ember-cli-dependency-checker": "^3.1.0",