Potential fix for code scanning alert no. 32: Workflow does not contain permissions

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

Author: hyperxpro

.github/workflows/maven.yml

@@ -2,6 +2,8 @@
 # Docs: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
 
 name: Build PR
+permissions:
+  contents: read
 
 on:
   push: