build(deps): bump org.mockito:mockito-core from 5.20.0 to 5.21.0

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 5.20.0 to 5.21.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.20.0...v5.21.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-version: 5.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle

@@ -86,7 +86,7 @@ dependencies {
     internalPlatform platform("org.junit:junit-bom:5.13.4")
 
     api "org.junit.jupiter:junit-jupiter-api"
-    api "org.mockito:mockito-core:5.20.0"
+    api "org.mockito:mockito-core:5.21.0"
 
     testImplementation "org.apache.groovy:groovy:4.0.29"
     testImplementation "org.assertj:assertj-core:3.27.6"