Updates ember-page-title

Latest version should be FastBoot-compatible, and should not introduce
any breaking change.

Author: locks

package.json

@@ -51,7 +51,7 @@
     "ember-load-initializers": "^1.0.0",
     "ember-maybe-import-regenerator": "^0.1.6",
     "ember-moment": "^7.3.1",
-    "ember-page-title": "3.1.5",
+    "ember-page-title": "^3.2.0",
     "ember-resolver": "3.0.0",
     "ember-router-scroll": "0.1.1",
     "ember-source": "2.12.0",