Update dependency types/mypy to v1.9.0 (#72)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [types/mypy](https://www.mypy-lang.org/)
([source](https://togithub.com/python/mypy),
[changelog](https://mypy-lang.blogspot.com/)) | `==1.8.0` -> `==1.9.0` |
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|
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|
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|
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|

---

### Release Notes

<details>
<summary>python/mypy (types/mypy)</summary>

### [`v1.9.0`](https://togithub.com/python/mypy/compare/v1.8.0...1.9.0)

[Compare
Source](https://togithub.com/python/mypy/compare/v1.8.0...1.9.0)

</details>

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Author: lettuce-bot[bot]

pyproject.toml

@@ -35,7 +35,7 @@ test = [
 ]
 
 types = [
-  "mypy==1.8.0",
+  "mypy==1.9.0",
   "types-requests==2.31.0.20240218",
 ]