Update dependency org.junit:junit-bom to v6

Author: renovate[bot]

build.gradle.kts

@@ -41,7 +41,7 @@ subprojects {
         implementation("org.seasar.doma:doma-slf4j:${domaVersion}")
         runtimeOnly("ch.qos.logback:logback-classic:1.5.20")
         runtimeOnly("com.h2database:h2:2.4.240")
-        testImplementation(platform("org.junit:junit-bom:5.14.1"))
+        testImplementation(platform("org.junit:junit-bom:6.0.1"))
         testImplementation("org.junit.jupiter:junit-jupiter-api")
         testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine")
         testRuntimeOnly("org.junit.platform:junit-platform-launcher")