Bump mockito-core from 3.12.1 to 3.12.3 (#7322)

Bumps [mockito-core](https:/mockito/mockito) from 3.12.1 to 3.12.3.
- [Release notes](https:/mockito/mockito/releases)
- [Commits](mockito/mockito@v3.12.1...v3.12.3)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

build.gradle

@@ -15,7 +15,7 @@ ext {
  reactiveStreamsVersion = "1.0.3"
  junitVersion = "4.13.2"
  testNgVersion = "7.4.0"
- mockitoVersion = "3.12.1"
+ mockitoVersion = "3.12.3"
  jmhLibVersion = "1.21"
  guavaVersion = "30.1.1-jre"
 }