fix(release): add clobber flag to dotslash-publish to allow overwriting assets

The dotslash-publish-release step was failing because the 'Create GitHub Release'
step had already uploaded the binary assets. Adding clobber: true allows dotslash
to overwrite/reuse existing assets when creating the dotslash manifest.

.github/workflows/rust-release.yml

@@ -463,6 +463,7 @@ jobs:
         with:
           tag: ${{ github.ref_name }}
           config: .github/dotslash-config.json
+          clobber: true
 
   # Publish to npm using authentication token
   publish-npm: