Potential fix for code scanning alert no. 4: Workflow does not contain permissions

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

.github/workflows/build.yml

@@ -3,6 +3,8 @@
 # Instead perform any modifications in .github/build.yml.template
 
 name: build
+permissions:
+  contents: read
 on:
   # can run job manually
   workflow_dispatch: