Update babel monorepo to v8.0.0-rc.4

Author: renovate[bot]

bun.lock

@@ -33,12 +33,12 @@
   },
   "overrides": {
     "esbuild": "^0.27.3",
-    "@babel/generator": "8.0.0-rc.3",
-    "@babel/parser": "8.0.0-rc.3",
-    "@babel/core": "8.0.0-rc.3",
-    "@babel/types": "8.0.0-rc.3",
-    "@babel/traverse": "8.0.0-rc.3",
-    "@babel/helper-validator-identifier": "8.0.0-rc.3",
+    "@babel/generator": "8.0.0-rc.4",
+    "@babel/parser": "8.0.0-rc.4",
+    "@babel/core": "8.0.0-rc.4",
+    "@babel/types": "8.0.0-rc.4",
+    "@babel/traverse": "8.0.0-rc.4",
+    "@babel/helper-validator-identifier": "8.0.0-rc.4",
     "unstorage": "alpha"
   }
 }