Bump @babel/runtime-corejs2 from 7.12.5 to 7.15.3 in /ui

Bumps [@babel/runtime-corejs2](https://github.com/babel/babel/tree/HEAD/packages/babel-runtime-corejs2) from 7.12.5 to 7.15.3.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.15.3/packages/babel-runtime-corejs2)

---
updated-dependencies:
- dependency-name: "@babel/runtime-corejs2"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

ui/package.json

@@ -42,7 +42,7 @@
     "@babel/plugin-transform-modules-commonjs": "^7.14.0",
     "@babel/plugin-transform-runtime": "^7.14.5",
     "@babel/preset-env": "^7.14.7",
-    "@babel/runtime-corejs2": "^7.7.2",
+    "@babel/runtime-corejs2": "^7.15.3",
     "autoprefixer": "^9.6.1",
     "babel-eslint": "^10.0.1",
     "babel-helper-vue-jsx-merge-props": "^2.0.3",

ui/yarn.lock

@@ -1109,10 +1109,10 @@
     "@babel/types" "^7.4.4"
     esutils "^2.0.2"
 
-"@babel/runtime-corejs2@^7.7.2":
-  version "7.12.5"
-  resolved "https://registry.yarnpkg.com/@babel/runtime-corejs2/-/runtime-corejs2-7.12.5.tgz"
-  integrity sha512-kt5YpZ7F5A05LOgQuaMXXmcxakK/qttf5C/E1BJPA3Kf5PanbjPzDoXN+PIslUnjUxpuKblCsXyP0QfMiqyKqA==
+"@babel/runtime-corejs2@^7.15.3":
+  version "7.15.3"
+  resolved "https://registry.yarnpkg.com/@babel/runtime-corejs2/-/runtime-corejs2-7.15.3.tgz#1ca4ecd06eac49a080e13ba39d19710fa1472cf5"
+  integrity sha512-iG7ypZmrdoKP1ckFurS8z97TR+Bqd6KaDsLQ9DiC/Rdxmrvy1nsCDlgfLNKfalbg9sFWdmIdNf+Hg+19XysSFg==
   dependencies:
     core-js "^2.6.5"
     regenerator-runtime "^0.13.4"