Bump python-dotenv from 1.0.1 to 1.2.2 in /src

Bumps [python-dotenv](https://github.com/theskumar/python-dotenv) from 1.0.1 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@v1.0.1...v1.2.2)

---
updated-dependencies:
- dependency-name: python-dotenv
  dependency-version: 1.2.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/requirements.txt

@@ -1,5 +1,5 @@
 requests==2.32.4
-python-dotenv==1.0.1
+python-dotenv==1.2.2
 pandas>=2.2.2
 azure-cosmos==4.9.0
 azure-identity==1.19.0