fix(deps): update dependency charset-normalizer to v3.4.3 (#358)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
| [charset-normalizer](https://github.com/jawah/charset_normalizer) ([changelog](https://github.com/jawah/charset_normalizer/blob/master/CHANGELOG.md)) | `==3.4.2` -> `==3.4.3` | [![age](https://developer.mend.io/api/mc/badges/age/pypi/charset-normalizer/3.4.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/charset-normalizer/3.4.2/3.4.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>jawah/charset_normalizer (charset-normalizer)</summary>

### [`v3.4.3`](https://github.com/jawah/charset_normalizer/blob/HEAD/CHANGELOG.md#343-2025-08-09)

[Compare Source](https://github.com/jawah/charset_normalizer/compare/3.4.2...3.4.3)

##### Changed

- mypy(c) is no longer a required dependency at build time if `CHARSET_NORMALIZER_USE_MYPYC` isn't set to `1`. ([#&#8203;595](https://github.com/jawah/charset_normalizer/issues/595)) ([#&#8203;583](https://github.com/jawah/charset_normalizer/issues/583))
- automatically lower confidence on small bytes samples that are not Unicode in `detect` output legacy function. ([#&#8203;391](https://github.com/jawah/charset_normalizer/issues/391))

##### Added

- Custom build backend to overcome inability to mark mypy as an optional dependency in the build phase.
- Support for Python 3.14

##### Fixed

- sdist archive contained useless directories.
- automatically fallback on valid UTF-16 or UTF-32 even if the md says it's noisy. ([#&#8203;633](https://github.com/jawah/charset_normalizer/issues/633))

##### Misc

- SBOM are automatically published to the relevant GitHub release to comply with regulatory changes.
  Each published wheel comes with its SBOM. We choose CycloneDX as the format.
- Prebuilt optimized wheel are no longer distributed by default for CPython 3.7 due to a change in cibuildwheel.

</details>

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Reviewed-on: https://git.tainton.uk/repos/pypilot/pulls/358
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pyproject.toml

@@ -11,7 +11,7 @@ dependencies = [
     "astroid==3.3.11",
     "attrs==25.3.0",
     "certifi==2025.8.3",
-    "charset-normalizer==3.4.2",
+    "charset-normalizer==3.4.3",
     "click==8.2.2",
     "dill==0.4.0",
     "exceptiongroup==1.3.0",