Bump babel version (#1020)

Author: bryanmikaelian

package.json

@@ -11,12 +11,12 @@
     ]
   },
   "devDependencies": {
-    "@babel/cli": "7.6.0",
-    "@babel/core": "7.6.0",
-    "@babel/plugin-proposal-class-properties": "7.5.5",
-    "@babel/plugin-proposal-object-rest-spread": "7.5.5",
-    "@babel/plugin-transform-runtime": "7.6.0",
-    "@babel/preset-env": "7.6.0",
+    "@babel/cli": "^7.6.0",
+    "@babel/core": "^7.6.0",
+    "@babel/plugin-proposal-class-properties": "^7.5.5",
+    "@babel/plugin-proposal-object-rest-spread": "^7.5.5",
+    "@babel/plugin-transform-runtime": "^7.6.0",
+    "@babel/preset-env": "^7.6.0",
     "axios": "0.19.0",
     "babel-loader": "8.0.6",
     "concurrently": "4.1.2",