Bump strawberry-graphql in /Oracle-23ai-RAG-Chatbot

Bumps [strawberry-graphql](https://github.com/strawberry-graphql/strawberry) from 0.208.2 to 0.257.0.
- [Release notes](https://github.com/strawberry-graphql/strawberry/releases)
- [Changelog](https://github.com/strawberry-graphql/strawberry/blob/main/CHANGELOG.md)
- [Commits](strawberry-graphql/strawberry@0.208.2...0.257.0)

---
updated-dependencies:
- dependency-name: strawberry-graphql
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Oracle-23ai-RAG-Chatbot/requirements.txt

@@ -203,7 +203,7 @@ soupsieve==2.5
 SQLAlchemy==2.0.28
 stack-data==0.6.3
 starlette==0.37.2
-strawberry-graphql==0.208.2
+strawberry-graphql==0.257.0
 streamlit==1.32.2
 striprtf==0.0.26
 tabulate==0.9.0