build(deps): bump core-js from 2.6.9 to 3.9.1

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 2.6.9 to 3.9.1.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/commits/v3.9.1/packages/core-js)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -24,7 +24,7 @@
     "@uirouter/core": "6.0.7",
     "@uirouter/rx": "0.6.5",
     "@uirouter/visualizer": "^7.2.1",
-    "core-js": "^2.5.7",
+    "core-js": "^3.9.1",
     "rxjs": "^6.6.6",
     "rxjs-compat": "^6.6.3",
     "ts-helpers": "^1.1.2",

yarn.lock

@@ -3185,10 +3185,10 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.6.5.tgz#7395dc273af37fb2e50e9bd3d9fe841285231d1a"
   integrity sha512-vZVEEwZoIsI+vPEuoF9Iqf5H7/M3eeQqWlQnYa8FSKKePuYTf5MWnxb5SDAzCa60b3JBRS5g9b+Dq7b1y/RCrA==
 
-core-js@^2.5.7:
-  version "2.6.9"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.9.tgz#6b4b214620c834152e179323727fc19741b084f2"
-  integrity sha512-HOpZf6eXmnl7la+cUdMnLvUxKNqLUzJvgIziQ0DiF3JwSImNphIqdGqzj6hIKyX04MmV0poclQ7+wjWvxQyR2A==
+core-js@^3.9.1:
+  version "3.9.1"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.9.1.tgz#cec8de593db8eb2a85ffb0dbdeb312cb6e5460ae"
+  integrity sha512-gSjRvzkxQc1zjM/5paAmL4idJBFzuJoo+jDjF1tStYFMV2ERfD02HhahhCGXUyHxQRG4yFKVSdO6g62eoRMcDg==
 
 [email protected], core-util-is@~1.0.0:
   version "1.0.2"