Potential fix for code scanning alert no. 3: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: filip26

.github/workflows/java11-publish.yml

@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  packages: write
 name: Publish JRE11 to the Maven Central
 on:
   release: