Bump core-js from 3.11.2 to 3.12.0 in /webui/frontend (#143)

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.11.2 to 3.12.0.
- [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/v3.12.0/packages/core-js)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

webui/frontend/package.json

@@ -12,7 +12,7 @@
     "@vue/composition-api": "^1.0.0-rc.8",
     "axios": "^0.21.1",
     "bootstrap-vue": "^2.21.2",
-    "core-js": "^3.11.2",
+    "core-js": "^3.12.0",
     "vue": "^2.6.11",
     "vue-class-component": "^7.2.6",
     "vue-property-decorator": "^9.1.2",

webui/frontend/yarn.lock

@@ -2906,10 +2906,10 @@ core-js@^2.6.5:
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.11.tgz#38831469f9922bded8ee21c9dc46985e0399308c"
   integrity sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg==
 
-core-js@^3.11.2, core-js@^3.6.5:
-  version "3.11.2"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.11.2.tgz#af087a43373fc6e72942917c4a4c3de43ed574d6"
-  integrity sha512-3tfrrO1JpJSYGKnd9LKTBPqgUES/UYiCzMKeqwR1+jF16q4kD1BY2NvqkfuzXwQ6+CIWm55V9cjD7PQd+hijdw==
+core-js@^3.12.0, core-js@^3.6.5:
+  version "3.12.0"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.12.0.tgz#62bac86f7d7f087d40dba3e90a211c2c3c8559ea"
+  integrity sha512-SaMnchL//WwU2Ot1hhkPflE8gzo7uq1FGvUJ8GKmi3TOU7rGTHIU+eir1WGf6qOtTyxdfdcp10yPdGZ59sQ3hw==
 
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"