Bump @babel/register from 7.12.10 to 7.13.8

Bumps [@babel/register](https://github.com/babel/babel/tree/HEAD/packages/babel-register) from 7.12.10 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-register)

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package.json

@@ -12,7 +12,7 @@
   "devDependencies": {
     "@babel/core": "^7.12.10",
     "@babel/preset-env": "^7.12.11",
-    "@babel/register": "^7.12.10",
+    "@babel/register": "^7.13.8",
     "@wordpress/eslint-plugin": "^8.0.2",
     "babel-eslint": "^10.1.0",
     "babel-loader": "^8.2.2",