Bump pytest in /old/02-serverless-api-ecs-apigateway/tests

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.3.1 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@7.3.1...9.0.3)

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

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

Author: dependabot[bot]

old/02-serverless-api-ecs-apigateway/tests/requirements.txt

@@ -5,7 +5,7 @@ iniconfig==2.0.0
 jmespath==1.0.1
 packaging==23.1
 pluggy==1.0.0
-pytest==7.3.1
+pytest==9.0.3
 python-dateutil==2.8.2
 s3transfer==0.6.1
 six==1.16.0