Update java to JDK 21

Author: mywalkb

Diff for: .github/workflows/core.yml

@@ -51,7 +51,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: "temurin"
-          java-version: "17"
+          java-version: "21"
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v3

Diff for: build.gradle.kts

@@ -72,8 +72,8 @@ val androidMinSdkVersion by extra(27)
 val androidBuildToolsVersion by extra("34.0.0")
 val androidCompileSdkVersion by extra(34)
 val androidCompileNdkVersion by extra("26.2.11394342")
-val androidSourceCompatibility by extra(JavaVersion.VERSION_17)
-val androidTargetCompatibility by extra(JavaVersion.VERSION_17)
+val androidSourceCompatibility by extra(JavaVersion.VERSION_21)
+val androidTargetCompatibility by extra(JavaVersion.VERSION_21)
 
 tasks.register("Delete", Delete::class) {
     delete(rootProject.layout.buildDirectory)