Update dev dependencies.

Author: cknitt

package.json

@@ -22,13 +22,13 @@
     "reason-react": ">=0.7.0"
   },
   "devDependencies": {
-    "bs-platform": "5.0.6",
+    "bs-platform": "5.2.1",
     "bs-react-intl-extractor-bin": "0.7.0",
     "bsb-js": "^1.1.7",
-    "parcel-bundler": "1.12.3",
+    "parcel-bundler": "1.12.4",
     "react": "16.8.6",
     "react-dom": "16.8.6",
-    "react-intl": "3.1.6",
+    "react-intl": "3.4.0",
     "reason-react": "0.7.0"
   },
   "repository": {