Bump moment from 2.21.0 to 2.22.1

Bumps [moment](https://github.com/moment/moment) from 2.21.0 to 2.22.1.
- [Release notes](https://github.com/moment/moment/releases)
- [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md)
- [Commits](moment/moment@2.21.0...2.22.1)

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

package.json

@@ -21,7 +21,7 @@
     "js-yaml": "^3.10.0",
     "lodash": "^4.17.10",
     "memory-cache": "^0.2.0",
-    "moment": "^2.19.0",
+    "moment": "^2.22.1",
     "mqtt": "^2.13.0",
     "neodoc": "^2.0.0",
     "protobufjs": "^6.8.0"

yarn.lock

@@ -949,9 +949,9 @@ mocha@^5.1.1:
     mkdirp "0.5.1"
     supports-color "4.4.0"
 
-moment@^2.10.6, moment@^2.19.0:
-  version "2.21.0"
-  resolved "https://registry.yarnpkg.com/moment/-/moment-2.21.0.tgz#2a114b51d2a6ec9e6d83cf803f838a878d8a023a"
+moment@^2.10.6, moment@^2.22.1:
+  version "2.22.1"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.22.1.tgz#529a2e9bf973f259c9643d237fda84de3a26e8ad"
 
 mqtt-packet@^5.5.0:
   version "5.5.0"