Bump mockito-core from 2.28.2 to 3.0.0

Bumps [mockito-core](https://github.com/mockito/mockito) from 2.28.2 to 3.0.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v2.28.2...v3.0.0)

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

Author: dependabot-preview[bot]

build.gradle

@@ -37,7 +37,7 @@ dependencies {
     testImplementation 'org.glassfish:javax.json:1.1.4'
     testImplementation 'org.junit.jupiter:junit-jupiter-engine'
     testImplementation 'org.assertj:assertj-core:3.12.2'
-    testImplementation 'org.mockito:mockito-core:2.28.2'
+    testImplementation 'org.mockito:mockito-core:3.0.0'
 }
 
 test {