chore(deps-dev): bump ember-source from 3.15.0 to 3.16.0

Bumps [ember-source](https://github.com/emberjs/ember.js) from 3.15.0 to 3.16.0.
- [Release notes](https://github.com/emberjs/ember.js/releases)
- [Changelog](https://github.com/emberjs/ember.js/blob/master/CHANGELOG.md)
- [Commits](emberjs/ember.js@v3.15.0...v3.16.0)

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

package.json

@@ -45,7 +45,7 @@
     "ember-maybe-import-regenerator": "^0.1.6",
     "ember-qunit": "^4.1.2",
     "ember-resolver": "^7.0.0",
-    "ember-source": "~3.15.0",
+    "ember-source": "~3.16.0",
     "ember-source-channel-url": "^2.0.1",
     "ember-template-lint": "^1.0.0-beta.6",
     "ember-try": "^1.0.0",

yarn.lock

@@ -3866,10 +3866,10 @@ ember-source-channel-url@^2.0.1:
   dependencies:
     got "^8.0.1"
 
-ember-source@~3.15.0:
-  version "3.15.0"
-  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.15.0.tgz#f6500c6d289ce58231bf1e6695c4974df2be7390"
-  integrity sha512-daTELJBDMGqAmQb/Puxdk1YR204/zs1DEiEMQWlqbtmhphAoDUbGi9ifJu20ajP/IcOCWw9Vp7aPzguTohWF7w==
+ember-source@~3.16.0:
+  version "3.16.0"
+  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.16.0.tgz#c899ccac6783e218f12774139b1e6c3d2fc4c16b"
+  integrity sha512-zotw+jrvlV/Fdq0fwL04jdFsxtHBo+0YtMKVvaNbSWeV97DrULSdnBQ91Sq1KZ+9ueBbClngHF4wXJmlIwqb8g==
   dependencies:
     "@babel/helper-module-imports" "^7.0.0"
     "@babel/plugin-transform-block-scoping" "^7.6.2"
@@ -3878,6 +3878,7 @@ ember-source@~3.15.0:
     babel-plugin-debug-macros "^0.3.3"
     babel-plugin-filter-imports "^3.0.0"
     broccoli-concat "^3.7.4"
+    broccoli-debug "^0.6.4"
     broccoli-funnel "^2.0.2"
     broccoli-merge-trees "^3.0.2"
     chalk "^2.4.2"