Bump ember-source from 3.16.2 to 3.16.3

Bumps [ember-source](https://github.com/emberjs/ember.js) from 3.16.2 to 3.16.3.
- [Release notes](https://github.com/emberjs/ember.js/releases)
- [Changelog](https://github.com/emberjs/ember.js/blob/v3.16.3/CHANGELOG.md)
- [Commits](emberjs/ember.js@v3.16.2...v3.16.3)

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

Author: dependabot-preview[bot]

yarn.lock

@@ -4038,9 +4038,9 @@ ember-source-channel-url@^2.0.1:
     got "^8.0.1"
 
 ember-source@~3.16.1:
-  version "3.16.2"
-  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.16.2.tgz#bdb342445804d20b46796b98919a924e5a8eb61e"
-  integrity sha512-aRF90V88rJ6h47ootUw8oGcV7O4ulwLYNVqnokTr9RTeWjEimwMtzLLazUfDR1LZMkdMTLVLGcQkJCJVvUAg5A==
+  version "3.16.3"
+  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.16.3.tgz#080ded36d6b43ed1ee8e9a13ed4cebf27a50db6a"
+  integrity sha512-A5IuTBDnxM4zK5IOaoePOchmgaKm4iYuYfQZVsvuPoczm89SBTKuQZnsXFp2ZI8Sc17ALm1Euc9Lc10TNy2KXw==
   dependencies:
     "@babel/helper-module-imports" "^7.0.0"
     "@babel/plugin-transform-block-scoping" "^7.6.2"