Bump mockito-core from 3.4.4 to 3.4.6 (#7043)

Bumps [mockito-core](https://github.com/mockito/mockito) from 3.4.4 to 3.4.6.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v3.4.4...v3.4.6)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

Diff for: build.gradle

@@ -6,7 +6,7 @@ buildscript {
   ext.reactiveStreamsVersion = "1.0.3"
   ext.junitVersion = "4.13"
   ext.testNgVersion = "7.0.0"
-  ext.mockitoVersion = "3.4.4"
+  ext.mockitoVersion = "3.4.6"
   ext.jmhLibVersion = "1.21"
   ext.jmhGradleVersion = "0.5.0"
   ext.guavaVersion = "29.0-jre"