Update dependency pdm to v2.20.1 (#197)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [pdm](https://redirect.github.com/pdm-project/pdm)
([changelog](https://pdm-project.org/latest/dev/changelog/)) | patch |
`==2.20.0.post1` -> `==2.20.1` |

---

### Release Notes

<details>
<summary>pdm-project/pdm (pdm)</summary>

###
[`v2.20.1`](https://redirect.github.com/pdm-project/pdm/blob/HEAD/CHANGELOG.md#Release-v2201-2024-11-09)

[Compare
Source](https://redirect.github.com/pdm-project/pdm/compare/2.20.0.post1...2.20.1)

##### Features & Improvements

- Add a fixer to remove the deprecated `cross_platform` strategy from
lock file.
([#&#8203;3259](https://redirect.github.com/pdm-project/pdm/issues/3259))

##### Bug Fixes

- Fix the bug that `pdm build` would fail when `use_uv` is true.
([#&#8203;3231](https://redirect.github.com/pdm-project/pdm/issues/3231))
- Fix group name normalization when comparing groups.
([#&#8203;3247](https://redirect.github.com/pdm-project/pdm/issues/3247))
- Inherit file descriptors instead of closing when running child
processes in `pdm run`.
([#&#8203;3252](https://redirect.github.com/pdm-project/pdm/issues/3252))
- Fix using `no_proxy` when `all_proxy` is set.
([#&#8203;3254](https://redirect.github.com/pdm-project/pdm/issues/3254))
- Preserve multiline arrays and don't add empty tool.pdm table header
when updating the pyproject.toml.
([#&#8203;3258](https://redirect.github.com/pdm-project/pdm/issues/3258))
- Fix compatibility of `ErrorArgumentParser` for Python 3.12 and above.
([#&#8203;3264](https://redirect.github.com/pdm-project/pdm/issues/3264))

</details>

---

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requirements.txt

@@ -1,5 +1,5 @@
 cruft==2.15.0
 mex-release==0.3.0
-pdm==2.20.0.post1
+pdm==2.20.1
 pre-commit==4.0.1
 wheel==0.44.0