Change log:
e3be340 (5.3.x) Improve MessageKryoRegistrar for registrations
66be7fd Upgrade dependencies; prepare for release
f6587e2 Fix typo in KryoCodecTests
23f3482 Improve Kryo Codec for registrations
f095f94 GH-3348: Upgrade to MQTT Paho-1.2.4
dfa6c84 GH-3344: Treat kotlin.Unit return as null in MMIH (#3346)
ca60db5 SO-62761903: Inject BF into Gateway's correlator
a8c63e2 Fix CachedSessionFactory Race
3857157 GH-3324. fix NPE in StdIntFlowContext
9082c12 Fix MessagingGatewaySupport for reactive error (#3319)
9cd8a4a GH-3315: Fix (S)FTP Stream with Fair Rotation
434817f GH-3307: Retry TransTimedEx in LockRepo.acquire