Update Java version for compatibility tests in CI

This commit configures Java 20 for compatibility tests in our CI,
replacing Java 19.

ci/images/ci-image/Dockerfile

@@ -6,6 +6,6 @@ RUN ./setup.sh
 
 ENV JAVA_HOME /opt/openjdk/java17
 ENV JDK17 /opt/openjdk/java17
-ENV JDK19 /opt/openjdk/java19
+ENV JDK20 /opt/openjdk/java20
 
 ENV PATH $JAVA_HOME/bin:$PATH

ci/images/get-jdk-url.sh

@@ -5,8 +5,8 @@ case "$1" in
 	java17)
 		echo "https://github.com/bell-sw/Liberica/releases/download/17.0.6+10/bellsoft-jdk17.0.6+10-linux-amd64.tar.gz"
 	;;
-	java19)
-		echo "https://github.com/bell-sw/Liberica/releases/download/19.0.2+9/bellsoft-jdk19.0.2+9-linux-amd64.tar.gz"
+	java20)
+		echo "https://github.com/bell-sw/Liberica/releases/download/20%2B37/bellsoft-jdk20+37-linux-amd64.tar.gz"
 	;;
 	*)
 		echo $"Unknown java version"

ci/images/setup.sh

@@ -20,7 +20,7 @@ curl https://raw.githubusercontent.com/spring-io/concourse-java-scripts/v0.0.4/c
 
 mkdir -p /opt/openjdk
 pushd /opt/openjdk > /dev/null
-for jdk in java17 java19
+for jdk in java17 java20
 do
   JDK_URL=$( /get-jdk-url.sh $jdk )
   mkdir $jdk

ci/pipeline.yml

@@ -127,14 +127,14 @@ resources:
     access_token: ((github-ci-status-token))
     branch: ((branch))
     context: build
-- name: repo-status-jdk19-build
+- name: repo-status-jdk20-build
   type: github-status-resource
   icon: eye-check-outline
   source:
     repository: ((github-repo-name))
     access_token: ((github-ci-status-token))
     branch: ((branch))
-    context: jdk19-build
+    context: jdk20-build
 - name: slack-alert
   type: slack-notification
   icon: slack
@@ -231,7 +231,7 @@ jobs:
           "zip.type": "schema"
     get_params:
       threads: 8
-- name: jdk19-build
+- name: jdk20-build
   serial: true
   public: true
   plan:
@@ -239,7 +239,7 @@ jobs:
     - get: git-repo
     - get: every-morning
       trigger: true
-    - put: repo-status-jdk19-build
+    - put: repo-status-jdk20-build
       params: { state: "pending", commit: "git-repo" }
     - do:
         - task: check-project
@@ -248,16 +248,16 @@ jobs:
           privileged: true
           timeout: ((task-timeout))
           params:
-            TEST_TOOLCHAIN: 19
+            TEST_TOOLCHAIN: 20
             <<: *build-project-task-params
       on_failure:
         do:
-          - put: repo-status-jdk19-build
+          - put: repo-status-jdk20-build
             params: { state: "failure", commit: "git-repo" }
           - put: slack-alert
             params:
               <<: *slack-fail-params
-    - put: repo-status-jdk19-build
+    - put: repo-status-jdk20-build
       params: { state: "success", commit: "git-repo" }
 - name: build-pull-requests
   serial: true
@@ -441,7 +441,7 @@ jobs:
 
 groups:
 - name: "builds"
-  jobs: ["build", "jdk19-build"]
+  jobs: ["build", "jdk20-build"]
 - name: "releases"
   jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone", "promote-rc", "promote-release", "create-github-release"]
 - name: "ci-images"

spring-core/src/test/java/org/springframework/core/SpringCoreBlockHoundIntegrationTests.java

@@ -47,7 +47,7 @@ import static org.assertj.core.api.Assertions.assertThatThrownBy;
  * @author Sam Brannen
  * @since 5.2.4
  */
-@DisabledOnJre(value= {JRE.JAVA_18, JRE.JAVA_19}, disabledReason = "BlockHound is not compatible with Java 18+")
+@DisabledOnJre(value= {JRE.JAVA_18, JRE.JAVA_19, JRE.JAVA_20}, disabledReason = "BlockHound is not compatible with Java 18+")
 class SpringCoreBlockHoundIntegrationTests {
 
 	@BeforeAll