fix: Memory leak in collaborative editing service

package.json

@@ -49,7 +49,7 @@
     "@bull-board/api": "^3.5.0",
     "@bull-board/koa": "^3.5.0",
     "@hocuspocus/provider": "^1.0.0-alpha.16",
-    "@hocuspocus/server": "^1.0.0-alpha.70",
+    "@hocuspocus/server": "^1.0.0-alpha.73",
     "@outlinewiki/koa-passport": "^4.1.4",
     "@outlinewiki/passport-azure-ad-oauth2": "^0.1.0",
     "@sentry/node": "^6.3.1",

server/collaboration/tracing.js

@@ -48,7 +48,6 @@ export default class Tracing {
       instance.getConnectionsCount()
     );
 
-    // TODO: Waiting for `instance` available in payload
     Metrics.gaugePerInstance(
       "collaboration.documents_count",
       instance.getDocumentsCount()

yarn.lock

@@ -1165,10 +1165,10 @@
     y-protocols "^1.0.5"
     yjs "^13.5.8"
 
-"@hocuspocus/server@^1.0.0-alpha.70":
-  version "1.0.0-alpha.70"
-  resolved "https://registry.yarnpkg.com/@hocuspocus/server/-/server-1.0.0-alpha.70.tgz#0986d85d2eb05a60562ab58fe70a8b47b0ff3de7"
-  integrity sha512-LyMTo1tRfJGzz0F9J/wDr35cIc056uFQPzl/tLYuYX6DNhU6KF2UKuR4EYlyiYpxxRUIpFQe3yKYisusmU2E/Q==
+"@hocuspocus/server@^1.0.0-alpha.73":
+  version "1.0.0-alpha.73"
+  resolved "https://registry.yarnpkg.com/@hocuspocus/server/-/server-1.0.0-alpha.73.tgz#94cd4ab914983bec6a4f21a120b82e187ebdaded"
+  integrity sha512-7LtTeIEMyYcGWfFJlcl8CioBqyrperKATgOpMTAmBv0MBJKHU4+Z88WLxKBSDJGrXY+95kblFOtrqelfoqjIdA==
   dependencies:
     "@types/async-lock" "^1.1.2"
     "@types/uuid" "^8.3.0"