chore(deps-dev): bump ember-template-lint from 1.7.0 to 1.8.0

Bumps [ember-template-lint](https://github.com/rwjblue/ember-template-lint) from 1.7.0 to 1.8.0.
- [Release notes](https://github.com/rwjblue/ember-template-lint/releases)
- [Changelog](https://github.com/ember-template-lint/ember-template-lint/blob/master/CHANGELOG.md)
- [Commits](rwjblue/ember-template-lint@v1.7.0...v1.8.0)

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

yarn.lock

@@ -3703,9 +3703,9 @@ ember-source@~3.14.0:
     silent-error "^1.1.1"
 
 ember-template-lint@^1.0.0-beta.6:
-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/ember-template-lint/-/ember-template-lint-1.7.0.tgz#aa08dd9cb5b687209bfa27b4fe8605545c1184f5"
-  integrity sha512-BXXofuXOATt6Tz3wfsQK1iw3DLKgDTgeNOJeP6jH+Jxqpz7c84BLgISeLDdDsBfYumUeUQORDrmwI9Ia69iOGw==
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/ember-template-lint/-/ember-template-lint-1.8.0.tgz#78e37ef1dc0aa865aa65c0e6b36ecd405f6213de"
+  integrity sha512-2W0beWl/aX54ctGzsnfQijWFQ+TIO92UiMdVjPo7tFNzCmxZrG76E8fM0oAS1iGIXWhvP23p0Xoe8TIbOmTg7A==
   dependencies:
     "@glimmer/syntax" "^0.43.0"
     chalk "^2.0.0"