chore(deps-dev): bump @babel/core in /packages/opencode

Bumps [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) from 7.28.4 to 7.29.6.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.29.6/packages/babel-core)

---
updated-dependencies:
- dependency-name: "@babel/core"
  dependency-version: 7.29.6
  dependency-type: direct:development
...

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Author: dependabot[bot]

packages/opencode/package.json

@@ -32,7 +32,7 @@
     }
   },
   "devDependencies": {
-    "@babel/core": "7.28.4",
+    "@babel/core": "7.29.6",
     "@octokit/webhooks-types": "7.6.1",
     "@opencode-ai/core": "workspace:*",
     "@opencode-ai/http-recorder": "workspace:*",