chore(deps-dev): bump ember-source from 3.20.0 to 3.20.1 (#4566)

Bumps [ember-source](https://github.com/emberjs/ember.js) from 3.20.0 to 3.20.1.
- [Release notes](https://github.com/emberjs/ember.js/releases)
- [Changelog](https://github.com/emberjs/ember.js/blob/v3.20.1/CHANGELOG.md)
- [Commits](emberjs/ember.js@v3.20.0...v3.20.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -121,7 +121,7 @@
     "ember-router-scroll": "^3.3.2",
     "ember-simple-auth": "^3.0.0",
     "ember-simple-auth-token": "^5.1.0",
-    "ember-source": "~3.20.0",
+    "ember-source": "~3.20.1",
     "ember-table": "^2.2.3",
     "ember-template-lint": "^2.9.1",
     "ember-truth-helpers": "^2.1.0",

yarn.lock

@@ -7390,10 +7390,10 @@ ember-source-channel-url@^2.0.1:
   dependencies:
     got "^8.0.1"
 
-ember-source@~3.20.0:
-  version "3.20.0"
-  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.20.0.tgz#00ce44b5ff1d58b2acaf9f48879a223994ffef39"
-  integrity sha512-umSKoAOR7mI3XAaUZBX8ki814eHKuymEvCtNOWb4DRz02whIKX+iUKq7kRPVWgCp2NIG/WF/e3X0TDIvrPUI3Q==
+ember-source@~3.20.1:
+  version "3.20.1"
+  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.20.1.tgz#ade69fc31e7e2c9ab01f63491e10161032cf65f3"
+  integrity sha512-sxAQ2LvlFdqkh0Lw3v2uoXqXQQRdL7sxSwPkjgk1FJIYSzWbo2ecBNll+3cfvslq35xN8Dr3162naxoTGf3CJQ==
   dependencies:
     "@babel/helper-module-imports" "^7.8.3"
     "@babel/plugin-transform-block-scoping" "^7.8.3"