build(deps): bump the pip-minor-patch group in /backend with 2 updates (#42)

Bumps the pip-minor-patch group in /backend with 2 updates: [alembic](https://github.com/sqlalchemy/alembic) and [pytest](https://github.com/pytest-dev/pytest).


Updates `alembic` from 1.19.2 to 1.20.0
- [Release notes](https://github.com/sqlalchemy/alembic/releases)
- [Changelog](https://github.com/sqlalchemy/alembic/blob/main/CHANGES)
- [Commits](https://github.com/sqlalchemy/alembic/commits)

Updates `pytest` from 9.0.3 to 9.1.1
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest/compare/9.0.3...9.1.1)

---
updated-dependencies:
- dependency-name: alembic
  dependency-version: 1.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip-minor-patch
- dependency-name: pytest
  dependency-version: 9.1.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: pip-minor-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: ZProger <81753080+Zproger@users.noreply.github.com>

backend/requirements-dev.txt

@@ -3,6 +3,6 @@
 # backend container (see backend/tests/README.md) rather than baking these
 # into the Docker image.
 -r requirements.txt
-pytest==9.0.3
+pytest==9.1.1
 pytest-asyncio==1.4.0
 httpx==0.28.1

backend/requirements.txt

@@ -2,7 +2,7 @@ fastapi==0.141.1
 uvicorn[standard]==0.52.4
 sqlalchemy==2.0.52
 asyncpg==0.31.0
-alembic==1.19.2
+alembic==1.20.0
 pydantic==2.13.5
 pydantic-settings==2.15.0
 python-dotenv==1.2.3