Update dependency python-dateutil to v2.9.0.post0 (#70)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [python-dateutil](https://togithub.com/dateutil/dateutil) | `==2.9.0`
-> `==2.9.0.post0` |
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|
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---

### Release Notes

<details>
<summary>dateutil/dateutil (python-dateutil)</summary>

###
[`v2.9.0.post0`](https://togithub.com/dateutil/dateutil/releases/tag/2.9.0.post0)

[Compare
Source](https://togithub.com/dateutil/dateutil/compare/2.9.0...2.9.0.post0)

### Version 2.9.0.post0 (2024-03-01)

#### Bugfixes

- Pinned `setuptools_scm` to `<8`, which should make the generated
`_version.py` file compatible with all supported versions of Python.

</details>

---

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requirements.txt

@@ -11,7 +11,7 @@ pycparser==2.21
 PyGithub==2.2.0
 PyJWT==2.8.0
 PyNaCl==1.5.0
-python-dateutil==2.9.0
+python-dateutil==2.9.0.post0
 requests==2.31.0
 six==1.16.0
 smmap==5.0.1