Add explicit permissions to CI workflow

Co-authored-by: benaadams <1142958+benaadams@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -8,6 +8,8 @@ on:
 
 jobs:
   build-and-test:
+    permissions:
+      contents: read
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]