Test with Java 20 in CI.

See #1367.

Jenkinsfile

@@ -1,7 +1,7 @@
 def p = [:]
 node {
-    checkout scm
-    p = readProperties interpolate: true, file: 'ci/pipeline.properties'
+	checkout scm
+	p = readProperties interpolate: true, file: 'ci/pipeline.properties'
 }
 
 pipeline {
@@ -18,31 +18,7 @@ pipeline {
 	}
 
 	stages {
-		stage("Docker images") {
-			parallel {
-				stage('Publish JDK 17 + Cassandra 3.11') {
-					when {
-					    anyOf {
-							changeset "ci/openjdk17-8-cassandra-3.11/**"
-							changeset "ci/pipeline.properties"
-						}
-					}
-					agent { label 'data' }
-					options { timeout(time: 30, unit: 'MINUTES') }
-
-					steps {
-						script {
-							def image = docker.build("springci/spring-data-with-cassandra-3.11:${p['java.main.tag']}", "--build-arg BASE=${p['docker.java.main.image']} --build-arg CASSANDRA=${p['docker.cassandra.3.version']} ci/openjdk17-8-cassandra-3.11/")
-							docker.withRegistry(p['docker.registry'], p['docker.credentials']) {
-								image.push()
-							}
-						}
-					}
-				}
-			}
-		}
-
-		stage("test: baseline (Java 17)") {
+		stage("test: baseline (main)") {
 			when {
 				beforeAgent(true)
 				anyOf {
@@ -59,7 +35,7 @@ pipeline {
 			}
 			steps {
 				script {
-					docker.image("harbor-repo.vmware.com/dockerhub-proxy-cache/springci/spring-data-with-cassandra-3.11:${p['java.main.tag']}").inside('-v $HOME:/tmp/jenkins-home') {
+					docker.image("harbor-repo.vmware.com/dockerhub-proxy-cache/springci/spring-data-with-cassandra-3.11:${p['java.main.tag']}").inside(p['docker.java.inside.basic']) {
 						sh 'mkdir -p /tmp/jenkins-home'
 						sh 'JAVA_HOME=/opt/java/openjdk8 /opt/cassandra/bin/cassandra -R &'
 						sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml -Pci,external-cassandra clean dependency:list verify -Dsort -U -B'
@@ -68,6 +44,36 @@ pipeline {
 			}
 		}
 
+		stage("Test other configurations") {
+			when {
+				beforeAgent(true)
+				allOf {
+					branch(pattern: "main|(\\d\\.\\d\\.x)", comparator: "REGEXP")
+					not { triggeredBy 'UpstreamCause' }
+				}
+			}
+			parallel {
+				stage("test: baseline (next)") {
+					agent {
+						label 'data'
+					}
+					options { timeout(time: 30, unit: 'MINUTES') }
+					environment {
+						ARTIFACTORY = credentials("${p['artifactory.credentials']}")
+					}
+					steps {
+						script {
+							docker.image("harbor-repo.vmware.com/dockerhub-proxy-cache/springci/spring-data-with-cassandra-3.11:${p['java.next.tag']}").inside(p['docker.java.inside.basic']) {
+								sh 'mkdir -p /tmp/jenkins-home'
+								sh 'JAVA_HOME=/opt/java/openjdk8 /opt/cassandra/bin/cassandra -R &'
+								sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml -Pci,external-cassandra clean dependency:list verify -Dsort -U -B'
+							}
+						}
+					}
+				}
+			}
+		}
+
 		stage('Release to artifactory') {
 			when {
 				beforeAgent(true)

ci/openjdk17-8-cassandra-3.11/Dockerfile

@@ -1,27 +0,0 @@
-ARG BASE
-FROM ${BASE}
-# Any ARG statements before FROM are cleared.
-ARG CASSANDRA
-
-RUN set -eux; \
-	CASSANDRA_URL="https://archive.apache.org/dist/cassandra/${CASSANDRA}/apache-cassandra-${CASSANDRA}-bin.tar.gz"; \
-	sed -i -e 's/http/https/g' /etc/apt/sources.list ; \
-	curl -LfsSo /tmp/cassandra.tar.gz ${CASSANDRA_URL}; \
-		mkdir -p /opt/cassandra /opt/cassandra/data /opt/cassandra/logs; \
-		cd /opt/cassandra; \
-		tar -xf /tmp/cassandra.tar.gz --strip-components=1; \
-		rm -rf /tmp/cassandra.tar.gz; \
-		chmod -R a+rwx /opt/cassandra; \
-		useradd -d /home/jenkins-docker -m -u 1001 -U jenkins-docker;
-
-RUN set -eux; \
-	BINARY_URL='https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u322-b06/OpenJDK8U-jdk_x64_linux_hotspot_8u322b06.tar.gz'; \
-	curl -LfsSo /tmp/openjdk.tar.gz ${BINARY_URL}; \
-		mkdir -p /opt/java/openjdk8; \
-		cd /opt/java/openjdk8; \
-		tar -xf /tmp/openjdk.tar.gz --strip-components=1; \
-		rm -rf /tmp/openjdk.tar.gz;
-
-ENV PATH="/opt/java/openjdk8/bin:$PATH"
-ENV MAX_HEAP_SIZE=1500M
-ENV HEAP_NEWSIZE=300M

pom.xml

@@ -159,6 +159,12 @@
 				<artifactId>assertj-core</artifactId>
 				<version>${assertj}</version>
 				<scope>test</scope>
+				<exclusions>
+					<exclusion>
+						<groupId>net.bytebuddy</groupId>
+						<artifactId>byte-buddy</artifactId>
+					</exclusion>
+				</exclusions>
 			</dependency>
 
 			<dependency>