fix(ci): grant contents:write permission for release workflow

GITHUB_TOKEN needs explicit write access to create GitHub Releases.

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

Author: mferretti

.github/workflows/release.yml

@@ -8,6 +8,8 @@ on:
 jobs:
   release:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
 
     steps:
     - uses: actions/checkout@v6