Update ember-component-css to fix 3.6 deprecation

Author: cibernox

package.json

@@ -45,7 +45,7 @@
     "ember-cli-string-helpers": "^1.9.0",
     "ember-cli-tailwind": "^0.6.2",
     "ember-code-snippet": "^2.3.1",
-    "ember-component-css": "0.6.5",
+    "ember-component-css": "^0.6.7",
     "ember-concurrency": "^0.8.21",
     "ember-data": "2.x - 3.x",
     "ember-fetch": "^6.2.0",