Updated Upstream (Paper)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@d5ffc57 Implement more methods for horse inventories (#11147)
PaperMC/Paper@52ae4ad Migrate ArmorStand meta to using entity tag (#11107)

gradle.properties

@@ -2,7 +2,7 @@ group = org.purpurmc.purpur
 version = 1.21.1-R0.1-SNAPSHOT
 
 mcVersion = 1.21.1
-paperCommit = 4829fbf6bd51e2dc86e2f190971c081aac76a201
+paperCommit = 52ae4ad4666b34d637f2de573ed03c02b0fc6a24
 
 org.gradle.caching = true
 org.gradle.parallel = true