Update dependency types/mypy to v1.8.0 (#16)

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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/)) | `==1.6.1` -> `==1.8.0` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/types%2fmypy/1.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/types%2fmypy/1.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/types%2fmypy/1.6.1/1.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
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|

---

### Release Notes

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

### [`v1.8.0`](https://togithub.com/python/mypy/compare/v1.7.1...v1.8.0)

[Compare
Source](https://togithub.com/python/mypy/compare/v1.7.1...v1.8.0)

### [`v1.7.1`](https://togithub.com/python/mypy/compare/v1.7.0...v1.7.1)

[Compare
Source](https://togithub.com/python/mypy/compare/v1.7.0...v1.7.1)

### [`v1.7.0`](https://togithub.com/python/mypy/compare/v1.6.1...v1.7.0)

[Compare
Source](https://togithub.com/python/mypy/compare/v1.6.1...v1.7.0)

</details>

---

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Author: jessemyers-lettuce

pyproject.toml

@@ -35,7 +35,7 @@ test = [
 ]
 
 types = [
-  "mypy==1.6.1",
+  "mypy==1.8.0",
   "types-requests==2.31.0.10",
 ]