Updated upstream (Canvas)

Upstream has released updates that appear to apply and compile correctly.
The changes in this commit are automated, meaning there might be things missing.

Canvas Changes:
CraftCanvasMC/Canvas@3a502ec - Fix GUI player list updates by ensuring names refresh correctly (#221)
CraftCanvasMC/Canvas@3bc6a42 - Rebuild Patches
CraftCanvasMC/Canvas@f71a8a7 - Fix race condition in AffinitySchedulerThreadPool by using AtomicInteger for nextSteal (#223)
CraftCanvasMC/Canvas@31c2d7f - Restore spawner configs, implement 2 new configs (#219)

Author: surf-canvas-upstream-bot[bot]

gradle.properties

@@ -5,7 +5,7 @@ mcVersion=26.1.2
 channel=STABLE
 
 canvasBranch=ver/26.1.2
-canvasCommit=93643e1686724375a39cc5978aad8a495c163296
+canvasCommit=31c2d7f83abb7c880769f20192e8d58f26167909
 
 org.gradle.configuration-cache=true
 org.gradle.caching=true