build: Change minimal Java version to 11

Author: osipxd

CHANGELOG.md

@@ -13,6 +13,7 @@
 - Update required CommandAPI to 8.0.0+
 - Update required Mimic to 0.8.0+
 - Update Kotlin to 1.7.10
+- Minimal Java version set to 11
 
 ## [v0.1.2] (2022-01-07)
 

buildSrc/src/main/kotlin/kotlin-convention.gradle.kts

@@ -7,18 +7,17 @@ plugins {
 
 description = rootProject.description
 
-tasks.withType<JavaCompile>().configureEach {
-    sourceCompatibility = "1.8"
-    targetCompatibility = "1.8"
-    options.encoding = "UTF-8"
+java {
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
 }
 
 tasks.withType<KotlinCompile>().configureEach {
     kotlinOptions {
-        jvmTarget = "1.8"
-        apiVersion = "1.6"
-        languageVersion = "1.6"
-        freeCompilerArgs += "-Xopt-in=kotlin.RequiresOptIn"
+        jvmTarget = "11"
+        apiVersion = "1.7"
+        languageVersion = "1.7"
+        freeCompilerArgs += "-opt-in=kotlin.RequiresOptIn"
     }
 }