chore(deps): bump @ai-sdk/google-vertex from 2.1.12 to 2.2.27 (#1449)

Bumps [@ai-sdk/google-vertex](https://github.com/vercel/ai) from 2.1.12 to 2.2.27.
- [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/google-vertex@2.1.12...@ai-sdk/google-vertex@2.2.27)

---
updated-dependencies:
- dependency-name: "@ai-sdk/google-vertex"
  dependency-version: 2.2.27
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

packages/core/package.json

@@ -50,7 +50,7 @@
     "@ai-sdk/azure": "1.1.0",
     "@ai-sdk/deepseek": "0.2.5",
     "@ai-sdk/google": "1.2.18",
-    "@ai-sdk/google-vertex": "2.1.12",
+    "@ai-sdk/google-vertex": "2.2.27",
     "@ai-sdk/mistral": "1.1.0",
     "@ai-sdk/openai": "1.3.22",
     "@ai-sdk/perplexity": "1.1.3",