Bump org.junit:junit-bom from 5.11.2 to 5.11.3 in /plugin

Bumps [org.junit:junit-bom](https://github.com/junit-team/junit5) from 5.11.2 to 5.11.3.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.2...r5.11.3)

---
updated-dependencies:
- dependency-name: org.junit:junit-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

plugin/build.gradle.kts

@@ -46,7 +46,7 @@ dependencies {
     implementation(rootProject)
 
     testImplementation("org.junit.jupiter:junit-jupiter")
-    testImplementation(platform("org.junit:junit-bom:5.11.2"))
+    testImplementation(platform("org.junit:junit-bom:5.11.3"))
 }
 
 tasks.shadowJar {