fix(deps): update dependency org.junit:junit-bom to v6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -17,7 +17,7 @@ errorprone-nullaway = "com.uber.nullaway:nullaway:0.+"
 jakarta-annotation = { module = "jakarta.annotation:jakarta.annotation-api" }
 jspecify = "org.jspecify:jspecify:1.+"
 junit-api = { module = "org.junit.jupiter:junit-jupiter-api" }
-junit-bom = "org.junit:junit-bom:5.+"
+junit-bom = "org.junit:junit-bom:6.+"
 junit-parameters = { module = "org.junit.jupiter:junit-jupiter-params" }
 junit-engine = { module = "org.junit.jupiter:junit-jupiter-engine" }
 junit-jupiter = { module = "org.junit.jupiter:junit-jupiter" }