chore(deps): Update dependency org.junit:junit-bom to v6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -9,7 +9,7 @@ immutables = "2.11.3"
 indra = "3.2.0"
 jetbrainsAnnotations = "26.0.2"
 jgit = "7.3.0.+"
-junit = "5.13.4"
+junit = "6.0.0"
 kotlin = "1.9.25"
 mammoth = "1.5.0"
 spotless = "7.2.1"