Upgrade to rTorrent v5.4

## Version 5.4 Release
This release includes two hash threads instead of one to better split the load between multiple threads. For instance, instead of 30% on a single thread it will execute two threads with 15%. Half the downloads are assigned to one thread and the other half to the other thread.

UDNS now works as intended. A build issue is fixed for debugging. A handshake build mount is added for later for multi-threading support.

## What's Changed
* libtorrent: Implement two hash queue threads by @stickz in stickz/rtorrent#28
* libtorrent: Add handshake bind mount by @stickz in stickz/rtorrent#29
* libtorrent: Add UDNS to configure.ac by @stickz in stickz/rtorrent#32
* libtorrent: Fix instrumentation debug regression by @stickz in stickz/rtorrent#33


**Full Changelog**: stickz/rtorrent@v5.3-0.9.8-0.13.8...v5.4-0.9.8-0.13.8

Dockerfile

@@ -11,8 +11,8 @@ ARG GEOIP2_PHPEXT_VERSION=1.3.1
 ARG RUTORRENT_VERSION=9bf6e15c4864a71ff9e9ca5ea689fd001931279b
 ARG GEOIP2_RUTORRENT_VERSION=4ff2bde530bb8eef13af84e4413cedea97eda148
 
-# v5.3-0.9.8-0.13.8
-ARG RTORRENT_STICKZ_VERSION=effa2f24b0c6674d9e649dc626b659f4bd43c7b2
+# v5.4-0.9.8-0.13.8
+ARG RTORRENT_STICKZ_VERSION=32e1e6f6357d35b53aea947da16d9526fc5a3895
 
 ARG ALPINE_VERSION=3.19
 ARG ALPINE_S6_VERSION=${ALPINE_VERSION}-2.2.0.3