Bump org.junit:junit-bom from 5.9.1 to 6.0.3

Bumps [org.junit:junit-bom](https://github.com/junit-team/junit-framework) from 5.9.1 to 6.0.3.
- [Release notes](https://github.com/junit-team/junit-framework/releases)
- [Commits](junit-team/junit-framework@r5.9.1...r6.0.3)

---
updated-dependencies:
- dependency-name: org.junit:junit-bom
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

jme3-screenshot-tests/build.gradle

@@ -15,7 +15,7 @@ dependencies {
     implementation project(':jme3-plugins')
 
     implementation 'com.aventstack:extentreports:5.1.2'
-    implementation platform('org.junit:junit-bom:5.9.1')
+    implementation platform('org.junit:junit-bom:6.0.3')
     implementation 'org.junit.jupiter:junit-jupiter-api'
     testRuntimeOnly project(':jme3-testdata')
 }