Bump mockito-core from 3.3.1 to 3.3.3 (JabRef#6132)

Bumps [mockito-core](https://github.com/mockito/mockito) from 3.3.1 to 3.3.3.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v3.3.1...v3.3.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

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

build.gradle

@@ -204,7 +204,7 @@ dependencies {
     testImplementation 'net.bytebuddy:byte-buddy-parent:1.10.8'
     testRuntime group: 'org.apache.logging.log4j', name: 'log4j-core', version: '3.0.0-SNAPSHOT'
     testRuntime group: 'org.apache.logging.log4j', name: 'log4j-jul', version: '3.0.0-SNAPSHOT'
-    testImplementation 'org.mockito:mockito-core:3.3.1'
+    testImplementation 'org.mockito:mockito-core:3.3.3'
     testImplementation 'org.xmlunit:xmlunit-core:2.6.4'
     testImplementation 'org.xmlunit:xmlunit-matchers:2.6.4'
     testImplementation 'com.tngtech.archunit:archunit-junit5-api:0.13.1'