Update to JDK 17

Issue gh-46

gradle.properties

@@ -1,5 +1,5 @@
 version=5.6.0-SNAPSHOT
 spring-security.version=5.6.0-SNAPSHOT
-org.gradle.jvmargs=-Xmx3g -XX:MaxPermSize=2048m -XX:+HeapDumpOnOutOfMemoryError
+org.gradle.jvmargs=-Xmx3g -XX:+HeapDumpOnOutOfMemoryError
 org.gradle.parallel=true
 org.gradle.caching=true

reactive/webflux/kotlin/hello-security/build.gradle.kts

@@ -3,8 +3,8 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 plugins {
     id("org.springframework.boot") version "2.5.0"
     id("io.spring.dependency-management") version "1.0.9.RELEASE"
-    kotlin("jvm") version "1.5.0"
-    kotlin("plugin.spring") version "1.5.0"
+    kotlin("jvm") version "1.5.31"
+    kotlin("plugin.spring") version "1.5.31"
 }
 
 repositories {
@@ -34,7 +34,7 @@ dependencies {
 tasks.withType<KotlinCompile> {
     kotlinOptions {
         freeCompilerArgs = listOf("-Xjsr305=strict")
-        jvmTarget = "1.8"
+        jvmTarget = "11"
     }
 }
 

servlet/java-configuration/aspectj/build.gradle

@@ -8,6 +8,16 @@ repositories {
 	maven { url "https://repo.spring.io/snapshot" }
 }
 
+compileJava {
+	sourceCompatibility "1.8"
+	targetCompatibility "1.8"
+}
+
+compileTestJava {
+	sourceCompatibility "1.8"
+	targetCompatibility "1.8"
+}
+
 dependencies {
 	aspect platform("org.springframework:spring-framework-bom:5.3.0")
 	aspect platform("org.springframework.security:spring-security-bom:5.4.0-SNAPSHOT")

servlet/spring-boot/kotlin/hello-security/build.gradle.kts

@@ -3,8 +3,8 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 plugins {
     id("org.springframework.boot") version "2.5.0"
     id("io.spring.dependency-management") version "1.0.9.RELEASE"
-    kotlin("jvm") version "1.5.0"
-    kotlin("plugin.spring") version "1.5.0"
+    kotlin("jvm") version "1.5.31"
+    kotlin("plugin.spring") version "1.5.31"
 }
 
 repositories {
@@ -28,7 +28,7 @@ dependencies {
 tasks.withType<KotlinCompile> {
     kotlinOptions {
         freeCompilerArgs = listOf("-Xjsr305=strict")
-        jvmTarget = "1.8"
+        jvmTarget = "11"
     }
 }