Update dependency org.mockito:mockito-bom to v5.21.0 (#5219)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -53,7 +53,7 @@ log4j-jul = { module = "org.apache.logging.log4j:log4j-jul", version.ref = "log4
 maven = { module = "org.apache.maven:apache-maven", version = "3.9.11" }
 mavenSurefirePlugin = { module = "org.apache.maven.plugins:maven-surefire-plugin", version.ref = "surefire" }
 memoryfilesystem = { module = "com.github.marschall:memoryfilesystem", version = "2.8.2" }
-mockito-bom = { module = "org.mockito:mockito-bom", version = "5.20.0" }
+mockito-bom = { module = "org.mockito:mockito-bom", version = "5.21.0" }
 mockito-core = { module = "org.mockito:mockito-core" }
 mockito-junit-jupiter = { module = "org.mockito:mockito-junit-jupiter" }
 nohttp-checkstyle = { module = "io.spring.nohttp:nohttp-checkstyle", version = "0.0.11" }