Bump org.mockito:mockito-core from 5.11.0 to 5.12.0

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 5.11.0 to 5.12.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.11.0...v5.12.0)

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

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

build.gradle

@@ -110,7 +110,7 @@ dependencies {
   testRuntimeOnly 'com.vladsch.flexmark:flexmark-all:0.64.8' //scalatest html output
   testImplementation 'org.pegdown:pegdown:1.6.0'
 
-  testImplementation 'org.mockito:mockito-core:5.11.0' // mocking framework
+  testImplementation 'org.mockito:mockito-core:5.12.0' // mocking framework
   testImplementation "org.scalatestplus:mockito-3-12_$scalaVersion:3.2.10.0" // syntactic sugar
 }