chore(deps): bump pytest from 9.0.2 to 9.0.3 in /backend

Bumps [pytest](https://github.com/pytest-dev/pytest) from 9.0.2 to 9.0.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@9.0.2...9.0.3)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

backend/requirements-dev.txt

@@ -1,6 +1,6 @@
 # Development and CI/CD Dependencies
 ruff==0.15.3
 mypy==1.19.1
-pytest==9.0.2
+pytest==9.0.3
 pytest-asyncio==1.3.0
 httpx==0.28.1

backend/requirements.txt

@@ -7,7 +7,7 @@ pydantic-settings==2.13.1
 psycopg2-binary==2.9.11
 asyncpg==0.31.0
 python-dotenv==1.2.1
-pytest==9.0.2
+pytest==9.0.3
 pytest-asyncio==1.3.0
 httpx==0.28.1
 aiosqlite==0.22.1