Bump requests from 2.32.4 to 2.32.5 in /backend (#2092)

Bumps [requests](https://github.com/psf/requests) from 2.32.4 to 2.32.5.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.32.4...v2.32.5)

---
updated-dependencies:
- dependency-name: requests
  dependency-version: 2.32.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

backend/poetry.lock

@@ -40,7 +40,7 @@ python = "^3.13"
 python-dateutil = "^2.9.0.post0"
 pyyaml = "^6.0.2"
 reportlab = "^4.4.2"
-requests = "^2.32.3"
+requests = "^2.32.5"
 sentry-sdk = { extras = [ "django" ], version = "^2.20.0" }
 slack-bolt = "^1.22.0"
 slack-sdk = "^3.35.0"