Bump mockito-core from 3.5.5 to 3.5.6 (hazelcast#247)

Bumps [mockito-core](https://github.com/mockito/mockito) from 3.5.5 to 3.5.6.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v3.5.5...v3.5.6)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -36,7 +36,7 @@
     <junit.version>4.13</junit.version>
     <wiremock.version>2.27.1</wiremock.version>
     <hamcrest.version>2.2</hamcrest.version>
-    <mockito.version>3.5.5</mockito.version>
+    <mockito.version>3.5.6</mockito.version>
     <powermock.version>2.0.7</powermock.version>
     <findbugs.annotations.version>3.0.1u2</findbugs.annotations.version>