Fix release upload permission in deps build workflow

Add contents: write permission so GITHUB_TOKEN can upload to releases.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: StuartCameronCode

.github/workflows/build-deps-linux.yml

@@ -12,6 +12,9 @@ on:
         required: false
         type: string
 
+permissions:
+  contents: write
+
 jobs:
   build-deps:
     runs-on: ubuntu-22.04