Update Gradle and dependencies

.github/workflows/ci.yml

@@ -27,10 +27,10 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - name: set up JDK 11
+      - name: set up JDK
         uses: actions/setup-java@v5
         with:
-          java-version: '11'
+          java-version: 21
           distribution: 'temurin'
 
       - name: Cache Gradle wrapper dists

.github/workflows/docs.yml

@@ -15,10 +15,10 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - name: set up JDK 11
+      - name: set up JDK
         uses: actions/setup-java@v5
         with:
-          java-version: '11'
+          java-version: 21
           distribution: 'temurin'
 
       - name: Cache Gradle dependencies

extractor/build.gradle.kts

@@ -40,6 +40,13 @@ tasks.test {
     dependsOn(tasks.checkstyleMain) // run checkstyle when testing
 }
 
+// https://checkstyle.org/#JRE_and_JDK
+tasks.withType<Checkstyle>().configureEach {
+    javaLauncher = javaToolchains.launcherFor {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}
+
 checkstyle {
     configDirectory = rootProject.file("checkstyle")
     isIgnoreFailures = false

gradle.properties

@@ -0,0 +1,7 @@
+#
+# SPDX-FileCopyrightText: 2025 NewPipe e.V. <https://newpipe-ev.de>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
+# https://docs.gradle.org/current/userguide/configuration_cache.html
+org.gradle.configuration-cache=true

gradle/libs.versions.toml

@@ -4,7 +4,7 @@
 #
 
 [versions]
-checkstyle = "10.26.1"
+checkstyle = "12.3.0"
 gson = "2.13.2"
 jsr305 = "3.0.2"
 junit = "5.14.1"

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.12.1-bin.zip
+distributionSha256Sum=72f44c9f8ebcb1af43838f45ee5c4aa9c5444898b3468ab3f4af7b6076c5bc3f
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME