Bump @babel/core from 7.12.16 to 7.13.8

Bumps [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) from 7.12.16 to 7.13.8.
- [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/v7.13.8/packages/babel-core)

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

package.json

@@ -5,7 +5,7 @@
   "repository": "https://github.com/jellyfin/jellyfin-web",
   "license": "GPL-2.0-or-later",
   "devDependencies": {
-    "@babel/core": "^7.12.16",
+    "@babel/core": "^7.13.8",
     "@babel/eslint-parser": "^7.13.8",
     "@babel/eslint-plugin": "^7.13.0",
     "@babel/plugin-proposal-class-properties": "^7.12.13",