Add lenient strictness to k8s test (#5598)

Motivation:

We're seeing the following error and I don't think there's much we can
do about it.
I propose that we just adjust the lenient setting - the original purpose
of mockito strictness is probably not relevant here since we use a 3rd
party's test anyways.

https://ge.armeria.dev/scans/tests?search.relativeStartTime=P28D&search.tags=CI%2Cnot:PR&search.timeZoneId=Asia%2FSeoul&tests.container=com.linecorp.armeria.client.kubernetes.ArmeriaHttpHttpLoggingInterceptorTest&tests.sortField=FLAKY&tests.test=responseBodyIsNotConsumed()

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kubernetes/src/test/java/com/linecorp/armeria/client/kubernetes/ArmeriaHttpHttpLoggingInterceptorTest.java

@@ -18,11 +18,17 @@
 import java.lang.reflect.Field;
 
 import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.mockito.junit.jupiter.MockitoSettings;
+import org.mockito.quality.Strictness;
 
 import io.fabric8.kubernetes.client.http.AbstractHttpLoggingInterceptorTest;
 import io.fabric8.kubernetes.client.http.HttpClient;
 
 @SuppressWarnings("JUnitTestCaseWithNoTests")
+@ExtendWith(MockitoExtension.class)
+@MockitoSettings(strictness = Strictness.LENIENT)
 class ArmeriaHttpHttpLoggingInterceptorTest extends AbstractHttpLoggingInterceptorTest {
 
     @AfterEach