chore: pin root babel-core version

Author: yyx990803

package.json

@@ -42,7 +42,7 @@
     ]
   },
   "devDependencies": {
-    "babel-core": "7.0.0-beta.46",
+    "babel-core": "7.0.0-bridge.0",
     "debug": "^3.1.0",
     "eslint": "^4.16.0",
     "eslint-plugin-vue-libs": "^2.1.0",

yarn.lock

@@ -1288,6 +1288,10 @@ babel-code-frame@^6.22.0, babel-code-frame@^6.26.0:
     esutils "^2.0.2"
     js-tokens "^3.0.2"
 
+babel-core@7.0.0-bridge.0:
+  version "7.0.0-bridge.0"
+  resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-7.0.0-bridge.0.tgz#95a492ddd90f9b4e9a4a1da14eb335b87b634ece"
+
 babel-core@^6.0.0, babel-core@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.0.tgz#af32f78b31a6fcef119c87b0fd8d9753f03a0bb8"
@@ -1312,10 +1316,6 @@ babel-core@^6.0.0, babel-core@^6.26.0:
     slash "^1.0.0"
     source-map "^0.5.6"
 
-babel-core@^7.0.0-0:
-  version "7.0.0-bridge.0"
-  resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-7.0.0-bridge.0.tgz#95a492ddd90f9b4e9a4a1da14eb335b87b634ece"
-
 babel-eslint@^8.2.3:
   version "8.2.3"
   resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-8.2.3.tgz#1a2e6681cc9bc4473c32899e59915e19cd6733cf"