chore(deps): bump @babel/polyfill from 7.6.0 to 7.7.0

Bumps [@babel/polyfill](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](babel/babel@v7.6.0...v7.7.0)

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

packages/graphql-language-service/package.json

@@ -35,7 +35,7 @@
     "graphql": "^0.12.0 || ^0.13.0 || ^14.0.0"
   },
   "dependencies": {
-    "@babel/polyfill": "7.4.4",
+    "@babel/polyfill": "7.7.0",
     "graphql-config": "2.2.1",
     "graphql-language-service-interface": "^2.3.3",
     "graphql-language-service-server": "^2.3.3",

yarn.lock

@@ -698,18 +698,10 @@
     "@babel/helper-create-regexp-features-plugin" "^7.7.4"
     "@babel/helper-plugin-utils" "^7.0.0"
 
-"@babel/polyfill@7.4.4":
-  version "7.4.4"
-  resolved "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.4.4.tgz#78801cf3dbe657844eeabf31c1cae3828051e893"
-  integrity sha512-WlthFLfhQQhh+A2Gn5NSFl0Huxz36x86Jn+E9OW7ibK8edKPq+KLy4apM1yDpQ8kJOVi1OVjpP4vSDLdrI04dg==
-  dependencies:
-    core-js "^2.6.5"
-    regenerator-runtime "^0.13.2"
-
-"@babel/polyfill@^7.4.4":
-  version "7.6.0"
-  resolved "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.6.0.tgz#6d89203f8b6cd323e8d946e47774ea35dc0619cc"
-  integrity sha512-q5BZJI0n/B10VaQQvln1IlDK3BTBJFbADx7tv+oXDPIDZuTo37H5Adb9jhlXm/fEN4Y7/64qD9mnrJJG7rmaTw==
+"@babel/polyfill@7.7.0", "@babel/polyfill@^7.4.4":
+  version "7.7.0"
+  resolved "https://registry.yarnpkg.com/@babel/polyfill/-/polyfill-7.7.0.tgz#e1066e251e17606ec7908b05617f9b7f8180d8f3"
+  integrity sha512-/TS23MVvo34dFmf8mwCisCbWGrfhbiWZSwBo6HkADTBhUa2Q/jWltyY/tpofz/b6/RIhqaqQcquptCirqIhOaQ==
   dependencies:
     core-js "^2.6.5"
     regenerator-runtime "^0.13.2"