feat(babel): update babel to v7.2.x

Author: Mayank1791989

package.json

@@ -35,14 +35,14 @@
     "README.md"
   ],
   "dependencies": {
-    "@babel/plugin-proposal-class-properties": "7.1.0",
-    "@babel/plugin-proposal-object-rest-spread": "7.0.0",
-    "@babel/plugin-syntax-dynamic-import": "7.0.0",
-    "@babel/plugin-transform-runtime": "7.1.0",
-    "@babel/preset-env": "7.1.5",
+    "@babel/plugin-proposal-class-properties": "7.2.3",
+    "@babel/plugin-proposal-object-rest-spread": "7.2.0",
+    "@babel/plugin-syntax-dynamic-import": "7.2.0",
+    "@babel/plugin-transform-runtime": "7.2.0",
+    "@babel/preset-env": "7.2.3",
     "@babel/preset-flow": "7.0.0",
     "@babel/preset-react": "7.0.0",
-    "@babel/runtime": "7.1.5",
+    "@babel/runtime": "7.2.0",
     "babel-plugin-dynamic-import-node": "2.2.0",
     "babel-plugin-react-intl": "3.0.1",
     "flow-runtime": "0.17.0",