Bump python-dotenv from 1.0.0 to 1.2.1

Bumps [python-dotenv](https://github.com/theskumar/python-dotenv) from 1.0.0 to 1.2.1.
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v1.0.0...v1.2.1)

---
updated-dependencies:
- dependency-name: python-dotenv
  dependency-version: 1.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -16,7 +16,7 @@ itsdangerous==2.2.0
 Jinja2==3.1.6
 MarkupSafe==3.0.3
 packaging==25.0
-python-dotenv==1.0.0
+python-dotenv==1.2.1
 requests==2.32.5
 schedule==1.2.0
 urllib3==2.5.0