fix(ci): grant contents write to the release job (#400)

ncipollo/release-action creates the tag and release with GITHUB_TOKEN, which needs contents write. The least-privilege change left it at read, so the v8.6.0 release failed with a 403.

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

Author: mogita

.github/workflows/release.yml

@@ -7,7 +7,7 @@ on:
       - master
 
 permissions:
-  contents: read
+  contents: write
   pull-requests: read
 
 jobs: