Fix deprecation warnings (#595)

* Move LocalServerPort to new namespace as of Spring Boot 2.7
* Gradle `main` property has been deprecated in favour of `mainClass`

Author: Adrian Clay

service/build.gradle

@@ -124,7 +124,7 @@ sourceSets {
 }
 
 task(interoperabilityTestingToolJsonToXml, dependsOn: 'classes', type: JavaExec) {
-	main = 'uk.nhs.adaptors.gp2gp.transformjsontoxmltool.TransformJsonToXml'
+	mainClass.set('uk.nhs.adaptors.gp2gp.transformjsontoxmltool.TransformJsonToXml')
 	classpath = sourceSets.main.runtimeClasspath
 }
 

service/src/intTest/java/uk/nhs/adaptors/gp2gp/HealthCheckTest.java

@@ -6,7 +6,7 @@
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.boot.test.web.server.LocalServerPort;
 import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.junit.jupiter.SpringExtension;
 import org.springframework.web.reactive.function.client.WebClient;