fix(ci): grant security-events and packages permissions to security job

Reusable workflow calls inherit only explicitly granted permissions.
The nested security job requires packages: read and security-events: write
for CodeQL analysis.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -15,6 +15,10 @@ jobs:
   security:
     name: Run security workflow
     uses: ./.github/workflows/security.yml
+    permissions:
+      contents: read
+      packages: read
+      security-events: write
 
   tests:
     name: Run test workflow