Bump requests from 2.33.0 to 2.34.2 in /backend-agent

Bumps [requests](https://github.com/psf/requests) from 2.33.0 to 2.34.2.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.33.0...v2.34.2)

---
updated-dependencies:
- dependency-name: requests
  dependency-version: 2.34.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

backend-agent/pyproject.toml

@@ -25,7 +25,7 @@ dependencies = [
     'langchain-core>=0.3.0,<0.4.0',
     'langchain-text-splitters>=0.3.0,<0.4.0',
     'PyYAML==6.0.3',
-    'requests==2.33.0',
+    'requests==2.34.2',
     'unstructured==0.18.32',
     'art==6.5',
     'pandas==2.3.3',