Bump ember-cli-htmlbars from 5.3.1 to 5.6.2

Bumps [ember-cli-htmlbars](https://github.com/ember-cli/ember-cli-htmlbars) from 5.3.1 to 5.6.2.
- [Release notes](https://github.com/ember-cli/ember-cli-htmlbars/releases)
- [Changelog](https://github.com/ember-cli/ember-cli-htmlbars/blob/master/CHANGELOG.md)
- [Commits](ember-cli/ember-cli-htmlbars@v5.3.1...v5.6.2)

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

Author: dependabot-preview[bot]

package.json

@@ -55,7 +55,7 @@
     "ember-cli-blueprint-test-helpers": "^0.19.1",
     "ember-cli-dependency-checker": "^3.2.0",
     "ember-cli-eslint": "^5.1.0",
-    "ember-cli-htmlbars": "^5.3.1",
+    "ember-cli-htmlbars": "^5.6.2",
     "ember-cli-inject-live-reload": "^2.0.1",
     "ember-disable-prototype-extensions": "^1.1.3",
     "ember-export-application-global": "^2.0.1",