adjust naming buildVersion -> version

src/main/java/de/ozgcloud/admin/Root.java

@@ -30,7 +30,7 @@ import lombok.Getter;
 @Getter
 public class Root {
 	private String javaVersion;
-	private String buildVersion;
+	private String version;
 	private Instant buildTime;
 	private String buildNumber;
 }

src/main/java/de/ozgcloud/admin/RootController.java

@@ -48,7 +48,7 @@ public class RootController {
 		return Root.builder()
 				.javaVersion(System.getProperty("java.version"))
 				.buildTime(buildProperties.getTime())
-				.buildVersion(buildProperties.getVersion())
+				.version(buildProperties.getVersion())
 				.buildNumber(buildProperties.get("number"))
 				.build();
 	}

src/test/java/de/ozgcloud/admin/RootControllerTest.java

@@ -90,7 +90,7 @@ class RootControllerTest {
 
 			ResultActions result = doRequest();
 
-			result.andExpect(jsonPath("$.buildVersion").value(RootTestFactory.BUILD_VERSION));
+			result.andExpect(jsonPath("$.version").value(RootTestFactory.BUILD_VERSION));
 		}
 
 		@Test

src/test/java/de/ozgcloud/admin/RootTestFactory.java

@@ -40,7 +40,7 @@ public class RootTestFactory {
 		return Root.builder()
 				.buildTime(BUILD_TIME)
 				.javaVersion(JAVA_VERSION)
-				.buildVersion(BUILD_VERSION)
+				.version(BUILD_VERSION)
 				.buildNumber(BUILD_NUMBER);
 	}
 }