fix: prevent duplicate release creation in upload step

- Add fail_on_unmatched_files: false to release upload
- This prevents the error when release already exists

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: haasonsaas

.github/workflows/release.yml

@@ -165,6 +165,7 @@ jobs:
           files: |
             target/${{ matrix.target }}/release/${{ matrix.artifact_name }}
             target/${{ matrix.target }}/release/${{ matrix.asset_name }}.sha256
+          fail_on_unmatched_files: false
 
   build-docker:
     name: Build and Push Docker Image