Updated Upstream (BungeeCord)

Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

BungeeCord Changes:
e0556097 Bump Netty to 4.2.1.Final
8bff00f1 #3830: Dialog & 25w21a changes
4d37c248 Document packages net.md_5.bungee.api.dialog.action and net.md_5.bungee.api.dialog.body.
75456b2c Document package net.md_5.bungee.api.dialog
53365e4b Fix java 8 javadoc
69e4872f Minecraft 25w20a protocol support
a336efb8 #3825, #3826: Check memory address availability before using natives
ae2fc30b #3828: Set allocator using Netty system property to apply pooled allocator default globally
2bafb705 Minecraft 25w19a protocol support
617c2728 Minecraft 25w18a protocol support
89069a36 #3823: Add client brand API
1279cca9 #3810: Use retainedSlice if possible in MinecraftDecoder
26433bf0 #3821: Fix race condition that leads to incorrect packet order
d81040cd Bump lombok version
d7538df9 #3815: Ensure ping response for unthrottling
2516de65 #3816: Upgrade Netty to 4.2.0.Final
1da3a8c2 #3814: Fire exception in pipeline if async task in eventloop throws exception
f6151dce Bump version to 1.21-R0.3-SNAPSHOT
96677437 Release 1.21-R0.2
7587f033 SPIGOT-8024, #3811, #3812: Add versioned chat serialization (beta)

Author: electronicboy