Replace Java 19 by 21 (LTS) in CI

* Bump Spring Boot test to v3.1.3

.github/workflows/continuous-integration.yaml

@@ -23,7 +23,7 @@ jobs:
         java:
           - '11'
           - '17'
-          - '19'
+          - '21'
         os:
           - ubuntu-latest
           - macos-latest
@@ -50,7 +50,7 @@ jobs:
         java:
           - '11'
           - '17'
-          - '19'
+          - '21'
         os:
           - windows-latest
     runs-on: ${{ matrix.os }}

CHANGELOG.adoc

@@ -64,6 +64,7 @@ Build Improvement::
 * Set JUnit5 as default test engine (#1186) (@abelsromero)
 * Removed pollutedTest Gradle task using junit-pioneer (#1193) (@abelsromero)
 * Ignore 'docs/**' changes in CI (#1225) (@abelsromero)
+* Run tests on Java 21 (#1236) (@abelsromero)
 
 Documentation::
 

asciidoctorj-springboot-integration-test/springboot-app/build.gradle

@@ -2,7 +2,7 @@ import org.gradle.nativeplatform.platform.internal.DefaultNativePlatform
 import org.springframework.boot.gradle.plugin.SpringBootPlugin
 
 plugins {
-	id 'org.springframework.boot' version '3.1.0'
+	id 'org.springframework.boot' version '3.1.3'
 	id 'java'
 }
 
@@ -31,8 +31,8 @@ java {
 
 def getToolchainVersion() {
 	if (DefaultNativePlatform.getCurrentOperatingSystem().isWindows()) {
-		if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_19))
-			return 19
+		if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_21))
+			return 21
 	}
 	return 17
 }

build.gradle

@@ -239,8 +239,8 @@ configure(subprojects.findAll { !it.name.endsWith('-distribution') && ! it.name.
 // Windows workaround to fix invalid toolchain detection
 def getToolchainVersion() {
   if (DefaultNativePlatform.getCurrentOperatingSystem().isWindows()) {
-    if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_19))
-      return 19
+    if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_21))
+      return 21
     if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_17))
       return 17
   }