Bump @babel/plugin-proposal-decorators from 7.6.0 to 7.7.0 (#12348)

Bumps [@babel/plugin-proposal-decorators](https://github.com/babel/babel) from 7.6.0 to 7.7.0.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/compare/v7.6.0...v7.7.0)

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

package.json

@@ -61,7 +61,7 @@
   "dependencies": {
     "@babel/core": "^7.4.5",
     "@babel/plugin-proposal-class-properties": "^7.7.0",
-    "@babel/plugin-proposal-decorators": "^7.6.0",
+    "@babel/plugin-proposal-decorators": "^7.7.0",
     "@babel/plugin-proposal-object-rest-spread": "^7.6.2",
     "@babel/plugin-syntax-dynamic-import": "^7.2.0",
     "@babel/plugin-transform-react-inline-elements": "^7.2.0",

yarn.lock

@@ -111,7 +111,7 @@
     "@babel/traverse" "^7.4.4"
     "@babel/types" "^7.4.4"
 
-"@babel/helper-create-class-features-plugin@^7.6.0", "@babel/helper-create-class-features-plugin@^7.7.0":
+"@babel/helper-create-class-features-plugin@^7.7.0":
   version "7.7.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.7.0.tgz#bcdc223abbfdd386f94196ae2544987f8df775e8"
   integrity sha512-MZiB5qvTWoyiFOgootmRSDV1udjIqJW/8lmxgzKq6oDqxdmHUjeP2ZUOmgHdYjmUVNABqRrHjYAYRvj8Eox/UA==
@@ -381,12 +381,12 @@
     "@babel/helper-create-class-features-plugin" "^7.7.0"
     "@babel/helper-plugin-utils" "^7.0.0"
 
-"@babel/plugin-proposal-decorators@^7.6.0":
-  version "7.6.0"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-decorators/-/plugin-proposal-decorators-7.6.0.tgz#6659d2572a17d70abd68123e89a12a43d90aa30c"
-  integrity sha512-ZSyYw9trQI50sES6YxREXKu+4b7MAg6Qx2cvyDDYjP2Hpzd3FleOUwC9cqn1+za8d0A2ZU8SHujxFao956efUg==
+"@babel/plugin-proposal-decorators@^7.7.0":
+  version "7.7.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-decorators/-/plugin-proposal-decorators-7.7.0.tgz#d386a45730a4eb8c03e23a80b6d3dbefd761c9c9"
+  integrity sha512-dMCDKmbYFQQTn1+VJjl5hbqlweuHl5oDeMU9B1Q7oAWi0mHxjQQDHdJIK6iW76NE1KJT3zA6dDU3weR1WT5D4A==
   dependencies:
-    "@babel/helper-create-class-features-plugin" "^7.6.0"
+    "@babel/helper-create-class-features-plugin" "^7.7.0"
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-syntax-decorators" "^7.2.0"