build(deps): Bump ms from 0.7.3 to 2.1.2 (#66)

Bumps [ms](/~https://github.com/zeit/ms) from 0.7.3 to 2.1.2.
- [Release notes](/~https://github.com/zeit/ms/releases)
- [Commits](vercel/ms@0.7.3...2.1.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -56,7 +56,7 @@
     "istanbul": "^0.4.5",
     "mocha": "^3.1.2",
     "mongodb-js-precommit": "^2.0.0",
-    "ms": "^0.7.1",
+    "ms": "^2.1.2",
     "pre-commit": "^1.0.10",
     "yargs": "^3.32.0",
     "zuul": "^3.0.0"