Potential fix for code scanning alert no. 6: Workflow does not contain permissions (#307)

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

Author: robgruen

.github/workflows/ci.python.yml

@@ -15,6 +15,8 @@ defaults:
 
 jobs:
   pyright:
+    permissions:
+      contents: read
     strategy:
       fail-fast: false
       matrix: