Merge pull request #851 from hypothesis/dependabot/npm_and_yarn/browserify-16.2.3

Bump browserify from 13.3.0 to 16.2.3

package.json

@@ -19,7 +19,7 @@
     "aws-sdk": "^2.345.0",
     "babel-preset-es2015": "^6.24.0",
     "babelify": "^7.3.0",
-    "browserify": "^13.0.0",
+    "browserify": "^16.2.3",
     "browserify-istanbul": "^2.0.0",
     "browserify-ngannotate": "^1.0.1",
     "browserify-shim": "^3.8.12",