chore(deps): bump @ai-sdk/deepseek from 2.0.39 to 3.0.12

Bumps [@ai-sdk/deepseek](https://github.com/vercel/ai/tree/HEAD/packages/deepseek) from 2.0.39 to 3.0.12.
- [Release notes](https://github.com/vercel/ai/releases)
- [Changelog](https://github.com/vercel/ai/blob/main/packages/deepseek/CHANGELOG.md)
- [Commits](https://github.com/vercel/ai/commits/@ai-sdk/deepseek@3.0.12/packages/deepseek)

---
updated-dependencies:
- dependency-name: "@ai-sdk/deepseek"
  dependency-version: 3.0.12
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pnpm-lock.yaml

@@ -71,7 +71,7 @@ peerDependencyRules:
 
 catalog:
   '@ai-sdk/anthropic': 3.0.84
-  '@ai-sdk/deepseek': 2.0.39
+  '@ai-sdk/deepseek': 3.0.12
   '@ai-sdk/google': 3.0.82
   '@ai-sdk/openai': 3.0.71
   '@ai-sdk/react': 3.0.207