chore(deps): bump @ai-sdk/provider-utils from 3.0.21 to 4.0.19

Bumps [@ai-sdk/provider-utils](https://github.com/vercel/ai) from 3.0.21 to 4.0.19.
- [Release notes](https://github.com/vercel/ai/releases)
- [Changelog](https://github.com/vercel/ai/blob/main/CHANGELOG.md)
- [Commits](https://github.com/vercel/ai/compare/@ai-sdk/provider-utils@3.0.21...@ai-sdk/provider-utils@4.0.19)

---
updated-dependencies:
- dependency-name: "@ai-sdk/provider-utils"
  dependency-version: 4.0.19
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

packages/opencode/package.json

@@ -66,7 +66,7 @@
     "@ai-sdk/openai-compatible": "1.0.32",
     "@ai-sdk/perplexity": "2.0.23",
     "@ai-sdk/provider": "2.0.1",
-    "@ai-sdk/provider-utils": "3.0.21",
+    "@ai-sdk/provider-utils": "4.0.19",
     "@ai-sdk/togetherai": "1.0.34",
     "@ai-sdk/vercel": "1.0.33",
     "@ai-sdk/xai": "2.0.51",