chore(deps): update dependency @babel/core to v8

Author: renovate[bot]

playground/compiler-react-18/package.json

@@ -13,7 +13,7 @@
     "react-dom": "^18.3.1"
   },
   "devDependencies": {
-    "@babel/core": "^7.29.7",
+    "@babel/core": "^8.0.1",
     "@rolldown/plugin-babel": "^0.2.3",
     "@types/react": "^18.3.20",
     "@types/react-dom": "^18.3.7",

playground/compiler/package.json

@@ -12,7 +12,7 @@
     "react-dom": "^19.2.8"
   },
   "devDependencies": {
-    "@babel/core": "^7.29.7",
+    "@babel/core": "^8.0.1",
     "@rolldown/plugin-babel": "^0.2.3",
     "@types/react": "^19.2.18",
     "@types/react-dom": "^19.2.5",

playground/include-node-modules/package.json

@@ -12,7 +12,7 @@
     "react-dom": "^19.2.8"
   },
   "devDependencies": {
-    "@babel/core": "^7.29.7",
+    "@babel/core": "^8.0.1",
     "@rolldown/plugin-babel": "^0.2.3",
     "@types/babel__core": "^7.20.5",
     "@types/react": "^19.2.18",

playground/react-emotion/package.json

@@ -16,7 +16,7 @@
     "react-switch": "^7.1.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.29.7",
+    "@babel/core": "^8.0.1",
     "@emotion/babel-plugin": "^11.13.5",
     "@rolldown/plugin-babel": "^0.2.3",
     "@types/react": "^19.2.18",