chore(deps): bump slack-sdk from 3.45.0 to 3.46.0 in /claude-agent-sdk (#39)

Bumps [slack-sdk](https://github.com/slackapi/python-slack-sdk) from 3.45.0 to 3.46.0.
- [Release notes](https://github.com/slackapi/python-slack-sdk/releases)
- [Commits](slackapi/python-slack-sdk@v3.45.0...v3.46.0)

---
updated-dependencies:
- dependency-name: slack-sdk
  dependency-version: 3.46.0
  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]

claude-agent-sdk/pyproject.toml

@@ -8,7 +8,7 @@ dependencies = [
     "python-dotenv==1.2.4",
     "slack-bolt==1.30.0",
     "slack-cli-hooks==0.3.0",
-    "slack-sdk==3.45.0",
+    "slack-sdk==3.46.0",
 ]
 
 [project.optional-dependencies]