Bump mongodb from 2.0.42 to 3.6.1 in /compose (#448)

Bumps [mongodb](https://github.com/mongodb/node-mongodb-native) from 2.0.42 to 3.6.1.
- [Release notes](https://github.com/mongodb/node-mongodb-native/releases)
- [Changelog](https://github.com/mongodb/node-mongodb-native/blob/master/CHANGES_3.0.0.md)
- [Commits](mongodb/node-mongodb-native@V2.0.42...v3.6.1)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

compose/package.json

@@ -10,6 +10,6 @@
   "author": "Stefan Scherer",
   "license": "MIT",
   "dependencies": {
-    "mongodb": "2.0.42"
+    "mongodb": "3.6.1"
   }
 }