chore(deps): bump python-dotenv

Bumps the uv group with 1 update in the /apps/orchestrator directory: [python-dotenv](https://github.com/theskumar/python-dotenv).


Updates `python-dotenv` from 1.2.1 to 1.2.2
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v1.2.1...v1.2.2)

---
updated-dependencies:
- dependency-name: python-dotenv
  dependency-version: 1.2.2
  dependency-type: direct:production
  dependency-group: uv
...

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

Author: dependabot[bot]

apps/orchestrator/requirements.txt

@@ -13,7 +13,7 @@ rich==14.3.3
 pytest==9.0.3
 fastapi==0.128.1
 uvicorn==0.44.0
-python-dotenv==1.2.1
+python-dotenv==1.2.2
 opentelemetry-api==1.41.0
 opentelemetry-sdk==1.41.0
 opentelemetry-exporter-otlp-proto-grpc==1.41.0