Upgrade to latest metrics

services/track-changes/package.json

@@ -16,7 +16,7 @@
     "mongojs": "^1.4.1",
     "settings-sharelatex": "git+https://github.com/sharelatex/settings-sharelatex.git#v1.0.0",
     "logger-sharelatex": "git+https://github.com/sharelatex/logger-sharelatex.git#v1.5.0",
-    "metrics-sharelatex": "git+https://github.com/sharelatex/metrics-sharelatex.git#v1.7.0",
+    "metrics-sharelatex": "git+https://github.com/sharelatex/metrics-sharelatex.git#v1.7.1",
     "request": "~2.33.0",
     "redis-sharelatex": "~0.0.9",
     "redis": "~0.10.1",