Revert Gradle 9 update

Author: piazzesiNiccolo-GS

.github/workflows/continuous_integration.yml

@@ -18,7 +18,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: "temurin"
-          java-version: 17
+          java-version: 11
       - name: Setup gradle
         uses: gradle/actions/setup-gradle@v4
       - name: lint

.github/workflows/documentation.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v1
         with:
-          java-version: 17
+          java-version: 11
       - uses: eskatos/gradle-command-action@v1
         with:
           arguments: buildDocumentation

build.gradle

@@ -52,23 +52,19 @@ allprojects { project ->
 		pluginManager.withPlugin('java') {
 			java {
 				toolchain {
-					languageVersion.set(JavaLanguageVersion.of(17))
+					languageVersion.set(JavaLanguageVersion.of(11))
 				}
 				withJavadocJar()
 				withSourcesJar()
 			}
 			tasks.withType(JavaCompile).configureEach {
 				if (!it.name.contains("Test")) {
 					options.release = 8
-				} else {
-					options.release = 11
 				}
 			}
 			tasks.withType(KotlinCompile).configureEach {
 				if (!it.name.contains("Test")) {
 					it.compilerOptions.jvmTarget = JvmTarget.JVM_1_8
-				} else {
-					it.compilerOptions.jvmTarget = JvmTarget.JVM_11
 				}
 			}
 

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.2-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME