Update JavaVersion from 11 to 17.

Needed by Gradle V8.  Error message:

* What went wrong:
Execution failed for task ':app:kaptGenerateStubsDebugKotlin'.
> 'compileDebugJavaWithJavac' task (current target is 11) and 'kaptGenerateStubsDebugKotlin' task (current target is 17) jvm target compatibility should be set to the same Java version.

app/build.gradle.kts

@@ -36,8 +36,8 @@ androidGitVersion {
 
 android {
   compileOptions {
-    sourceCompatibility = JavaVersion.VERSION_11
-    targetCompatibility = JavaVersion.VERSION_11
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
   }
 
   namespace = "audio.funkwhale.ffa"
@@ -47,7 +47,7 @@ android {
   }
 
   kotlinOptions {
-    jvmTarget = JavaVersion.VERSION_11.toString()
+    jvmTarget = JavaVersion.VERSION_17.toString()
   }
 
   buildFeatures {