Bump @babel/polyfill from 7.8.3 to 7.8.7 in /js

Bumps [@babel/polyfill](https://github.com/babel/babel) from 7.8.3 to 7.8.7.
- [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/v7.8.3...v7.8.7)

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

js/package-lock.json

@@ -1093,12 +1093,12 @@
       }
     },
     "@babel/polyfill": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.8.3.tgz",
-      "integrity": "sha512-0QEgn2zkCzqGIkSWWAEmvxD7e00Nm9asTtQvi7HdlYvMhjy/J38V/1Y9ode0zEJeIuxAI0uftiAzqc7nVeWUGg==",
+      "version": "7.8.7",
+      "resolved": "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.8.7.tgz",
+      "integrity": "sha512-LeSfP9bNZH2UOZgcGcZ0PIHUt1ZuHub1L3CVmEyqLxCeDLm4C5Gi8jRH8ZX2PNpDhQCo0z6y/+DIs2JlliXW8w==",
       "requires": {
         "core-js": "^2.6.5",
-        "regenerator-runtime": "^0.13.2"
+        "regenerator-runtime": "^0.13.4"
       },
       "dependencies": {
         "core-js": {
@@ -1107,9 +1107,9 @@
           "integrity": "sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg=="
         },
         "regenerator-runtime": {
-          "version": "0.13.3",
-          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.3.tgz",
-          "integrity": "sha512-naKIZz2GQ8JWh///G7L3X6LaQUAMp2lvb1rvwwsURe/VXwD6VMfr+/1NuNw3ag8v2kY1aQ/go5SNn79O9JU7yw=="
+          "version": "0.13.4",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.4.tgz",
+          "integrity": "sha512-plpwicqEzfEyTQohIKktWigcLzmNStMGwbOUbykx51/29Z3JOGYldaaNGK7ngNXV+UcoqvIMmloZ48Sr74sd+g=="
         }
       }
     },

js/package.json

@@ -28,7 +28,7 @@
   "devDependencies": {
     "@babel/core": "^7.8.6",
     "@babel/plugin-syntax-dynamic-import": "^7.8.3",
-    "@babel/polyfill": "^7.8.3",
+    "@babel/polyfill": "^7.8.7",
     "@babel/preset-env": "^7.8.7",
     "babel-loader": "^8.0.6",
     "css-loader": "^3.4.2",