…and can subsequently confirm that 2.19.1 is out and does does the trick:
[root@test tmp]# wget https://artifacts.opensearch.org/releases/bundle/opensearch/2.19.1/opensearch-2.19.1-linux-x64.tar.gz
…blah…
[root@test tmp]# tar -xvzf opensearch-2.19.1-linux-x64.tar.gz
…blah…
[root@test tmp]# cd opensearch-2.19.1
[root@test opensearch-2.19.1]# find . -name netty-handler*
./modules/transport-netty4/netty-handler-4.1.118.Final.jar
./performance-analyzer-rca/lib/netty-handler-4.1.118.Final.jar
./performance-analyzer-rca/lib/netty-handler-proxy-4.1.118.Final.jar
./plugins/opensearch-ml/netty-handler-4.1.118.Final.jar
./plugins/opensearch-performance-analyzer/netty-handler-4.1.118.Final.jar
./plugins/opensearch-performance-analyzer/netty-handler-proxy-4.1.118.Final.jar
./plugins/opensearch-security/netty-handler-4.1.118.Final.jar
Thanks for the very quick turnaround!