Update dependency pre-commit to v3.8.0 (#18)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [pre-commit](https://github.com/pre-commit/pre-commit) | minor | `==3.7.1` -> `==3.8.0` |

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### Release Notes

<details>
<summary>pre-commit/pre-commit (pre-commit)</summary>

### [`v3.8.0`](https://github.com/pre-commit/pre-commit/blob/HEAD/CHANGELOG.md#380---2024-07-28)

[Compare Source](https://github.com/pre-commit/pre-commit/compare/v3.7.1...v3.8.0)

\==================

##### Features

-   Implement health checks for `language: r` so environments are recreated if
    the system version of R changes.
    -   [#&#8203;3206](https://github.com/pre-commit/pre-commit/issues/3206) issue by [@&#8203;lorenzwalthert](https://github.com/lorenzwalthert).
    -   [#&#8203;3265](https://github.com/pre-commit/pre-commit/issues/3265) PR by [@&#8203;lorenzwalthert](https://github.com/lorenzwalthert).

</details>

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### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻️ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

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Reviewed-on: https://code.irrsinn.net/Irrsinn.net/public-plex-watchlist/pulls/18
Co-authored-by: Renovate Bot <averymd+renovate@irrsinn.net>
Co-committed-by: Renovate Bot <averymd+renovate@irrsinn.net>

requirements.txt

@@ -1,2 +1,2 @@
 detect-secrets==1.5.0
-pre-commit==3.7.1
+pre-commit==3.8.0