test: simplify statement lambda to expression lambda in KubernetesWatchTaskTest

Signed-off-by: Elena Parapounsky <[email protected]>

Author: eparapounsky

gradle-plugin/kubernetes/src/test/java/org/eclipse/jkube/gradle/plugin/task/KubernetesWatchTaskTest.java

@@ -59,9 +59,7 @@ void setUp() {
     // Mock required for environments with no DOCKER available (don't remove)
     dockerAccessFactoryMockedConstruction = mockConstruction(DockerAccessFactory.class,
         (mock, ctx) -> when(mock.createDockerAccess(any())).thenReturn(mock(DockerAccess.class)));
-    dockerBuildServiceMockedConstruction = mockConstruction(DockerBuildService.class, (mock, ctx) -> {
-      when(mock.isApplicable()).thenReturn(true);
-    });
+    dockerBuildServiceMockedConstruction = mockConstruction(DockerBuildService.class, (mock, ctx) -> when(mock.isApplicable()).thenReturn(true));
     watcherManagerMockedStatic = mockStatic(WatcherManager.class);
     kubernetesHelperMockedStatic = mockStatic(KubernetesHelper.class);
     extension = new TestKubernetesExtension();