Merge pull request #6 from mongodb-js/dependabot/npm_and_yarn/bson-4.0.3

Bump bson from 1.1.0 to 4.0.3

Author: imlucas

package-lock.json

@@ -20,7 +20,7 @@
     "check"
   ],
   "devDependencies": {
-    "bson": "^1.0.4",
+    "bson": "^4.0.3",
     "chai": "^4.1.2",
     "eslint-config-mongodb-js": "^2.2.0",
     "mocha": "^4.0.1",