chore(deps): bump @babel/standalone from 7.12.12 to 7.12.15 in /client

Bumps [@babel/standalone](https://github.com/babel/babel/tree/HEAD/packages/babel-standalone) from 7.12.12 to 7.12.15.
- [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/v7.12.15/packages/babel-standalone)

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

client/package-lock.json

@@ -1948,9 +1948,9 @@
       }
     },
     "@babel/standalone": {
-      "version": "7.12.12",
-      "resolved": "https://registry.npmjs.org/@babel/standalone/-/standalone-7.12.12.tgz",
-      "integrity": "sha512-sHuNDN9NvPHsDAmxPD3RpsIeqCoFSW+ySa6+3teInrYe9y0Gn5swLQ2ZE7Zk6L8eBBESZM2ob1l98qWauQfDMA=="
+      "version": "7.12.15",
+      "resolved": "https://registry.npmjs.org/@babel/standalone/-/standalone-7.12.15.tgz",
+      "integrity": "sha512-H4TLICPkno/jBZWW4SC3kVzK3ByrwtyANZ1gCgl4+01DuXDyUFTWqigYvd5vjuixzXfdkDodTvXhv5p249pQNw=="
     },
     "@babel/template": {
       "version": "7.10.4",

client/package.json

@@ -8,7 +8,7 @@
     "@babel/plugin-proposal-export-default-from": "^7.12.1",
     "@babel/plugin-proposal-function-bind": "^7.12.1",
     "@babel/polyfill": "^7.12.1",
-    "@babel/standalone": "^7.12.12",
+    "@babel/standalone": "^7.12.15",
     "@fortawesome/fontawesome": "^1.1.8",
     "@fortawesome/fontawesome-svg-core": "^1.2.34",
     "@fortawesome/free-brands-svg-icons": "^5.15.2",