Updated Upstream (Paper)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@9b9de827 Update Alternate Current patch to v1.9.1 (#12115)
PaperMC/Paper@c62252e1 Add lore content guard (#12116)
PaperMC/Paper@40416784 [ci/skip] Mention missing World#regenerateChunk implementation in jd (#12109)
PaperMC/Paper@a6e82d90 [ci/skip] Clarify getChunkAtAsyncUrgently javadocs (#12125)
PaperMC/Paper@cb25c0cf [ci/skip] Fix annotation fields used in NMS getBukkitEntity (#12120)
PaperMC/Paper@00701267 [ci/skip] improvement example in javadoc for DatapackRegistrar (#12122)
PaperMC/Paper@608f004a add method on ItemStack to edit pdc (#12022)
PaperMC/Paper@7bee9971 Cleanup damage source a bit (#12106)
PaperMC/Paper@b9023b5d Add EntityAttemptSmashAttackEvent (#12113)
PaperMC/Paper@a3781ff3 Separate tick count to ensure vanilla parity (#12077)
PaperMC/Paper@2a4a1154 Add EntityEquipmentChangedEvent (#12011)
PaperMC/Paper@06f96dd6 Improvement in /plugins command (#12121)
PaperMC/Paper@28d07dc5 use correct spigot plugin count
PaperMC/Paper@60394c5b Fix PlayerReadyArrowEvent cancellation desync (#12111)
PaperMC/Paper@b27e11cc Fix bad world to chunk coordinate example in javadocs (#12131)
PaperMC/Paper@88cdd220 Fixup luck and random implementation in CB loot-tables (#11926)
PaperMC/Paper@84609dc0 Don't auto-create any brig redirects (#11954)
PaperMC/Paper@8eb8e44a Allow For Default Titles in InventoryView Builders (#12013)

gradle.properties

@@ -2,7 +2,7 @@ group = org.purpurmc.purpur
 version = 1.21.4-R0.1-SNAPSHOT
 
 mcVersion = 1.21.4
-paperCommit = 6cfa2f7f315cbad23d7b12984b751f2721b496b6
+paperCommit = 8eb8e44ac32a99f53da7af50e800ac8831030580
 
 org.gradle.configuration-cache = true
 org.gradle.caching = true