fix(deps): update dependency aiosqlite to v0.21.0 (#78)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [aiosqlite](https://github.com/omnilib/aiosqlite) | project.dependencies | minor | `==0.20.0` -> `==0.21.0` |

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### Release Notes

<details>
<summary>omnilib/aiosqlite (aiosqlite)</summary>

### [`v0.21.0`](https://github.com/omnilib/aiosqlite/blob/HEAD/CHANGELOG.md#v0210)

[Compare Source](https://github.com/omnilib/aiosqlite/compare/v0.20.0...v0.21.0)

Maintenance release

-   Fix: close connection correctly when BaseException raised in connection ([#&#8203;317](https://github.com/omnilib/aiosqlite/issues/317))
-   Metadata improvements
-   Tested and supported on Python 3.13
-   Drop support for Python 3.8
-   Drop testing on PyPy

```text
$ git shortlog -s v0.20.0...v0.21.0
     6	Amethyst Reese
     1	Gabriel
     1	Stanley Kudrow
    11	dependabot[bot]
```

</details>

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Reviewed-on: #78
Co-authored-by: Renovate <renovate@csw.im>
Co-committed-by: Renovate <renovate@csw.im>

pyproject.toml

@@ -7,7 +7,7 @@ license = { file = "LICENSE" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-  "aiosqlite==0.20.0",
+  "aiosqlite==0.21.0",
   "beautifulsoup4==4.13.3",
   "colorthief==0.2.1",
   "markdownify==0.14.1",