Bump @babel/polyfill from 7.2.5 to 7.4.0 in /js

Bumps [@babel/polyfill](https://github.com/babel/babel) from 7.2.5 to 7.4.0.
- [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/v7.2.5...v7.4.0)

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

js/package-lock.json

@@ -988,25 +988,25 @@
       }
     },
     "@babel/polyfill": {
-      "version": "7.2.5",
+      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.2.5.tgz",
+      "resolved": "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.4.0.tgz",
-      "integrity": "sha512-8Y/t3MWThtMLYr0YNC/Q76tqN1w30+b0uQMeFUYauG2UGTR19zyUtFrAzT23zNtBxPp+LbE5E/nwV/q/r3y6ug==",
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       "dev": true,
       "requires": {
-        "core-js": "^2.5.7",
+        "core-js": "^2.6.5",
-        "regenerator-runtime": "^0.12.0"
+        "regenerator-runtime": "^0.13.2"
       },
       "dependencies": {
         "core-js": {
-          "version": "2.6.3",
+          "version": "2.6.5",
-          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.3.tgz",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
-          "integrity": "sha512-l00tmFFZOBHtYhN4Cz7k32VM7vTn3rE2ANjQDxdEN6zmXZ/xq1jQuutnmHvMG1ZJ7xd72+TA5YpUK8wz3rWsfQ==",
+          "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==",
           "dev": true
         },
         "regenerator-runtime": {
-          "version": "0.12.1",
+          "version": "0.13.2",
-          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.2.tgz",
-          "integrity": "sha512-odxIc1/vDlo4iZcfXqRYFj0vpXFNoGdKMAUieAlFYO6m/nl5e9KR/beGf41z4a1FI+aQgtjhuaSlDxQ0hmkrHg==",
+          "integrity": "sha512-S/TQAZJO+D3m9xeN1WTI8dLKBBiRgXBlTJvbWjCThHWZj9EvHK70Ff50/tYj2J/fvBY6JtFVwRuazHN2E7M9BA==",
           "dev": true
         }
       }

js/package.json

@@ -23,7 +23,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.4.0",
-    "@babel/polyfill": "^7.2.5",
+    "@babel/polyfill": "^7.4.0",
     "@babel/preset-env": "^7.4.2",
     "babel-loader": "^8.0.5",
     "css-loader": "^2.1.1",