Update Mockito to 5.3.1

Signed-off-by: Andriy Redko <andriy.redko@aiven.io>

Author: reta

client/build.gradle

@@ -16,7 +16,7 @@ dependencies {
     implementation project(':opensearch-ml-common')
     compileOnly group: 'org.opensearch', name: 'opensearch', version: "${opensearch_version}"
     testImplementation group: 'junit', name: 'junit', version: '4.13.2'
-    testImplementation group: 'org.mockito', name: 'mockito-core', version: '4.4.0'
+    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.3.1'
 
 }
 

ml-algorithms/build.gradle

@@ -32,8 +32,7 @@ dependencies {
     implementation group: 'io.protostuff', name: 'protostuff-api', version: '1.8.0'
     implementation group: 'io.protostuff', name: 'protostuff-collectionschema', version: '1.8.0'
     testImplementation group: 'junit', name: 'junit', version: '4.13.2'
-    testImplementation group: 'org.mockito', name: 'mockito-core', version: '4.4.0'
-    testImplementation group: 'org.mockito', name: 'mockito-inline', version: '4.4.0'
+    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.3.1'
     implementation group: 'com.google.guava', name: 'guava', version: '31.0.1-jre'
     implementation platform("ai.djl:bom:0.19.0")
     implementation group: 'ai.djl.pytorch', name: 'pytorch-model-zoo'