Update Urbit to v2.9 (#630)

urbit/docker-compose.yml

@@ -7,7 +7,7 @@ services:
       PROXY_AUTH_ADD: "false"
   
   manager:
-    image: mopfelwinrux/urbit-umbrel:v2.8@sha256:e9570fb3b52958a55f84cf96bee7eae809ded459d3be924cd3e09c06f9c6bfbf
+    image: mopfelwinrux/urbit-umbrel:v2.9@sha256:7693d4c9bd051838ae4fe1c2bc0bf38778cfc525afc103cde91a1fd757fdffb8
     ports:
       - "34343:34343"
     volumes:

urbit/umbrel-app.yml

@@ -2,7 +2,7 @@ manifestVersion: 1
 id: urbit
 category: Networking
 name: Urbit
-version: "v2.8"
+version: "v2.9"
 tagline: Run Urbit on your Umbrel
 description: >-
   Urbit is a personal server for self-sovereign personal & networked
@@ -35,10 +35,7 @@ torOnly: false
 submitter: ~mopfel-winrux
 submission: https://github.com/getumbrel/umbrel/pull/1246
 releaseNotes: >-
-  The previous release vere-v2.7 introduced a regression presenting as a significant disk read increase when swapping. This issue was caused by a flag meant only for development builds being set in the release build, causing every snapshot write to do an overly paranoid check on snapshot integrity.
+  A few days ago we discovered a performance issue when a remote scry publisher gets many simultaneous requests, as often happens during OTA updates. This performance bug caused the publisher to do 500x more work than necessary. We have now released vere-v2.9 to fix the issue.
 
 
-  We have now released vere-v2.8 to fix the issue.
-
-
-  Full release notes here: https://github.com/urbit/vere/releases/tag/vere-v2.8
+  Full release notes here: https://github.com/urbit/vere/releases/tag/vere-v2.9