chore(backend/deps-dev): bump the development-dependencies group across 1 directory with 3 updates

Bumps the development-dependencies group with 3 updates in the /autogpt_platform/backend directory: [poethepoet](https://github.com/nat-n/poethepoet), [requests](https://github.com/psf/requests) and [ruff](https://github.com/astral-sh/ruff).


Updates `poethepoet` from 0.41.0 to 0.42.1
- [Release notes](https://github.com/nat-n/poethepoet/releases)
- [Commits](https://github.com/nat-n/poethepoet/compare/v0.41.0...v0.42.1)

Updates `requests` from 2.32.5 to 2.33.1
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](https://github.com/psf/requests/compare/v2.32.5...v2.33.1)

Updates `ruff` from 0.15.0 to 0.15.8
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](https://github.com/astral-sh/ruff/compare/0.15.0...0.15.8)

---
updated-dependencies:
- dependency-name: poethepoet
  dependency-version: 0.42.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: development-dependencies
- dependency-name: requests
  dependency-version: 2.33.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: development-dependencies
- dependency-name: ruff
  dependency-version: 0.15.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
...

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