Potential fix for code scanning alert no. 12: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
Signed-off-by: Simon Marty <simon.marty@protonmail.com>

Author: simonmarty

.github/workflows/python-package.yml

@@ -2,6 +2,8 @@
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
 name: Python package
+permissions:
+  contents: read
 
 on:
   push: