🤖 chore: Add debug key in .babel.env.

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  - https://github.com/make-github-pseudonymous-again/rejuvenate/blob/9b50c2a1d7e9ab7b4bc9c9ff88892e98c5f62244/src/transforms/package.json:ensure-babel-env-debug.js
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Author: a-flying-potato

package.json

@@ -100,6 +100,7 @@
       "@babel/plugin-proposal-async-generator-functions"
     ],
     "env": {
+      "debug": {},
       "cover": {
         "sourceMaps": "both",
         "presets": [