github: Switch JavaScript publish to Github actions

With Blacksmith runners, it errors out as follows:

```
npm notice Publishing to https://registry.npmjs.org/ with tag next and public access
npm notice publish Signed provenance statement with source and build information from GitHub Actions
npm notice publish Provenance statement published to transparency log: https://search.sigstore.dev/?logIndex=221582002
npm error code E422
npm error 422 Unprocessable Entity - PUT https://registry.npmjs.org/@tursodatabase%2flimbo - Error verifying sigstore provenance bundle: Unsupported GitHub Actions runner environment: "self-hosted". Only "github-hosted" runners are supported when publishing with provenance.
npm error A complete log of this run can be found in: /home/runner/.npm/_logs/2025-05-28T08_42_29_830Z-debug-0.log
Error: Process completed with exit code 1.
```

.github/workflows/napi.yml

@@ -194,7 +194,7 @@ jobs:
           if-no-files-found: error
   publish:
     name: Publish
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     permissions:
       contents: read
       id-token: write