Upgrade to Java 25 (#250)

GitOrigin-RevId: d91c2b1c5c79ec3fe859652d86a353ad133aff52

Author: will-molloy

.github/workflows/build.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 21
+          java-version: 25
       - uses: gradle/actions/setup-gradle@v4
 
       - name: Build and test

.github/workflows/dependency-submission.yml

@@ -20,7 +20,7 @@ jobs:
       - uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 21
+          java-version: 25
 
       - name: Generate and submit dependency graph
         uses: gradle/actions/dependency-submission@v4

build.gradle.kts

@@ -27,13 +27,13 @@ allprojects {
 
   apply(plugin = "java")
   configure<JavaPluginExtension> {
-    sourceCompatibility = JavaVersion.VERSION_21
-    targetCompatibility = JavaVersion.VERSION_21
+    sourceCompatibility = JavaVersion.VERSION_25
+    targetCompatibility = JavaVersion.VERSION_25
   }
 
   apply(plugin = "kotlin")
   configure<KotlinJvmProjectExtension> {
-    jvmToolchain(21)
+    jvmToolchain(25)
   }
 
   apply(plugin = "com.diffplug.spotless")

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [plugins]
-spotless = { id = "com.diffplug.spotless", version = "7.2.1" }
+spotless = { id = "com.diffplug.spotless", version = "8.0.0" }
 spotbugs = { id = "com.github.spotbugs", version = "6.2.6" }
 buildtimetracker = { id = "com.asarkar.gradle.build-time-tracker", version = "5.0.1" }
 
@@ -15,7 +15,7 @@ truth = "1.4.4"
 mockito = "5.19.0"
 # langs
 scala = "3.7.2"
-kotlin = "2.2.10"
+kotlin = "2.3.0"
 
 [libraries]
 spotbugs-annotations = { module = "com.github.spotbugs:spotbugs-annotations", version.ref = "spotbugs" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-all.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

leetcode/build.gradle.kts

@@ -1 +1 @@
-java.sourceCompatibility = JavaVersion.VERSION_21
+java.sourceCompatibility = JavaVersion.VERSION_25