chore(deps): update dependency python-dotenv to v1.2.1 (#414)

This PR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
| [python-dotenv](https://redirect.github.com/theskumar/python-dotenv) |
dependency-groups | minor | `==1.1.1` -> `==1.2.1` | [![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/theskumar/python-dotenv/badge)](https://securityscorecards.dev/viewer/?uri=github.com/theskumar/python-dotenv)
|

---

### Release Notes

<details>
<summary>theskumar/python-dotenv (python-dotenv)</summary>

###
[`v1.2.1`](https://redirect.github.com/theskumar/python-dotenv/blob/HEAD/CHANGELOG.md#121---2025-10-26)

[Compare
Source](https://redirect.github.com/theskumar/python-dotenv/compare/v1.2.0...v1.2.1)

- Move more config to `pyproject.toml`, removed `setup.cfg`
- Add support for reading `.env` from FIFOs (Unix) by
\[[@&#8203;sidharth-sudhir](https://redirect.github.com/sidharth-sudhir)]
in
\[[#&#8203;586](https://redirect.github.com/theskumar/python-dotenv/issues/586)]

###
[`v1.2.0`](https://redirect.github.com/theskumar/python-dotenv/blob/HEAD/CHANGELOG.md#120---2025-10-26)

[Compare
Source](https://redirect.github.com/theskumar/python-dotenv/compare/v1.1.1...v1.2.0)

- Upgrade build system to use PEP 517 & PEP 518 to use `build` and
`pyproject.toml` by
\[[@&#8203;EpicWink](https://redirect.github.com/EpicWink)] in
\[[#&#8203;583](https://redirect.github.com/theskumar/python-dotenv/issues/583)]
- Add support for Python 3.14 by
\[[@&#8203;23f3001135](https://redirect.github.com/23f3001135)] in
[#&#8203;579](https://redirect.github.com/theskumar/python-dotenv/pull/563)
- Add support for disabling of `load_dotenv()` using
`PYTHON_DOTENV_DISABLED` env var. by
\[[@&#8203;matthewfranglen](https://redirect.github.com/matthewfranglen)]
in
\[[#&#8203;569](https://redirect.github.com/theskumar/python-dotenv/issues/569)]

</details>

---

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pyproject.toml

@@ -55,7 +55,7 @@ dev = [
     "ruff==0.8.6",
     "pre-commit==4.5.1; python_full_version >= '3.9'",
     "liccheck==0.9.2",
-    "python-dotenv==1.1.1",
+    "python-dotenv==1.2.1",
     "tox==4.31.0 ; python_full_version >= '3.10'",
     "tox<4.31.0 ; python_full_version < '3.10'",
     "django-debug-toolbar==5.2.0",