Bump babel-related deps (#5180)

package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@babel/code-frame": "7.0.0-beta.46",
-    "@babel/parser": "7.0.0-beta.55",
+    "@babel/parser": "7.1.2",
     "@glimmer/syntax": "0.30.3",
     "@iarna/toml": "2.0.0",
     "camelcase": "4.1.0",
@@ -71,10 +71,10 @@
     "yaml-unist-parser": "1.0.0-rc.4"
   },
   "devDependencies": {
-    "@babel/cli": "7.0.0-beta.55",
-    "@babel/core": "7.0.0-beta.55",
-    "@babel/preset-env": "7.0.0-beta.55",
-    "babel-loader": "8.0.0-beta.3",
+    "@babel/cli": "7.1.2",
+    "@babel/core": "7.1.2",
+    "@babel/preset-env": "7.1.0",
+    "babel-loader": "8.0.4",
     "benchmark": "2.1.4",
     "builtin-modules": "2.0.0",
     "codecov": "2.2.0",