use JDK 17, disable error prone and native demo project meanwhile (ref #329)

Author: jvmlet

build.gradle

@@ -74,7 +74,7 @@ subprojects {
     tasks.withType(JavaCompile).configureEach {
         options.errorprone.disableWarningsInGeneratedCode = true
 
-        options.errorprone.enabled  = (it.name.startsWith("compile") && it.name.endsWith("TestJava") ) ? false:(null != System.getenv("CI"))
+        options.errorprone.enabled  = false // (it.name.startsWith("compile") && it.name.endsWith("TestJava") ) ? false:(null != System.getenv("CI"))
 
 
     }

settings.gradle

@@ -11,5 +11,5 @@ rootProject.name = 'grpc-spring-boot-starter-root'
 include 'grpc-spring-boot-starter'
 include 'grpc-client-spring-boot-starter'
 include 'grpc-spring-boot-starter-demo'
-include 'grpc-spring-boot-starter-native-demo'
+//include 'grpc-spring-boot-starter-native-demo'