Update OpenJDK latest Docker image to use Java 21 (#6189)

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>

CHANGELOG.md

@@ -10,6 +10,7 @@
 - Implement debug_traceCall [#5885](https://github.com/hyperledger/besu/pull/5885)
 - Transactions that takes too long to evaluate, during block creation, are dropped from the txpool [#6163](https://github.com/hyperledger/besu/pull/6163)
 - New option `tx-pool-min-gas-price` to set a lower bound when accepting txs to the pool [#6098](https://github.com/hyperledger/besu/pull/6098)
+- Update OpenJDK latest Docker image to use Java 21 [#6189](https://github.com/hyperledger/besu/pull/6189)
 - Allow a transaction selection plugin to specify custom selection results [#6190](https://github.com/hyperledger/besu/pull/6190)
 - Add `rpc-gas-cap` to allow users to set gas limit to the RPC methods used to simulate transactions[#6156](https://github.com/hyperledger/besu/pull/6156)
 

docker/openjdk-latest/Dockerfile

@@ -1,9 +1,9 @@
 
-FROM ubuntu:22.04
+FROM ubuntu:23.10
 ARG VERSION="dev"
 
 RUN apt-get update && \
- apt-get install --no-install-recommends -q --assume-yes openjdk-19-jre-headless=19* libjemalloc-dev=5.* && \
+ apt-get install --no-install-recommends -q --assume-yes openjdk-21-jre-headless=21* libjemalloc-dev=5.* adduser=3* && \
  apt-get clean  && \
  rm -rf /var/lib/apt/lists/*  && \
  adduser --disabled-password --gecos "" --home /opt/besu besu && \