build(deps): update claude-agent-sdk requirement from >=0.2.91 to >=0.2.99 (#116)

build(deps): update claude-agent-sdk requirement

Updates the requirements on [claude-agent-sdk](https://github.com/anthropics/claude-agent-sdk-python) to permit the latest version.
- [Release notes](https://github.com/anthropics/claude-agent-sdk-python/releases)
- [Changelog](https://github.com/anthropics/claude-agent-sdk-python/blob/main/CHANGELOG.md)
- [Commits](anthropics/claude-agent-sdk-python@v0.2.91...v0.2.99)

---
updated-dependencies:
- dependency-name: claude-agent-sdk
  dependency-version: 0.2.99
  dependency-type: direct:production
...

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Author: dependabot[bot]

claude-agent-sdk/requirements.txt

@@ -1,7 +1,7 @@
 slack-sdk==3.42.0
 slack-bolt>=1.28.0
 slack-cli-hooks<1.0.0
-claude-agent-sdk>=0.2.91
+claude-agent-sdk>=0.2.99
 aiohttp>=3.14.0
 python-dotenv==1.2.2