chore(deps): bump pyjwt in /patterns/langgraph-single-agent (#126)

Bumps [pyjwt](https://github.com/jpadilla/pyjwt) from 2.12.1 to 2.13.0.
- [Release notes](https://github.com/jpadilla/pyjwt/releases)
- [Changelog](https://github.com/jpadilla/pyjwt/blob/master/CHANGELOG.rst)
- [Commits](jpadilla/pyjwt@2.12.1...2.13.0)

---
updated-dependencies:
- dependency-name: pyjwt
  dependency-version: 2.13.0
  dependency-type: direct:production
...

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Author: dependabot[bot]

patterns/langgraph-single-agent/requirements.txt

@@ -8,4 +8,4 @@ mcp>=1.23.1
 urllib3>=2.6.3
 python-multipart>=0.0.22
 bedrock-agentcore==1.4.7
-PyJWT[crypto]==2.12.1
+PyJWT[crypto]==2.13.0