Run licensecheck with Java 21

Author: akurtakov

.github/workflows/licensecheck.yml

@@ -21,6 +21,7 @@ jobs:
     uses: eclipse-dash/dash-licenses/.github/workflows/mavenLicenseCheck.yml@master
     with:
       projectId: eclipse.platform
+      javaVersion: 21
       submodules: recursive
     secrets:
       gitlabAPIToken: ${{ secrets.ECLIPSE_GITLAB_API_TOKEN }}