Synchronise all plugins on Java 17

Minimum required GoCD version moves to 22.1.0.

Author: chadlwilson

build.gradle

@@ -19,8 +19,8 @@ apply from: "https://raw.githubusercontent.com/gocd/gocd-plugin-gradle-task-help
 
 gocdPlugin {
     id = 'cd.go.authorization.google'
-    pluginVersion = '3.1.1'
-    goCdVersion = '20.9.0'
+    pluginVersion = '4.0.0'
+    goCdVersion = '22.1.0'
     name = 'Google oauth authorization plugin'
     description = 'Google oauth authorization plugin for GoCD'
     vendorName = 'ThoughtWorks, Inc.'
@@ -46,8 +46,13 @@ repositories {
     mavenLocal()
 }
 
+java {
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
+}
+
 tasks.withType(JavaCompile).configureEach {
-    options.release = 11
+    options.release = 17
 }
 
 ext {