chore(deps): update actions/checkout action to v6 (ublue-os#1118)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://redirect.github.com/actions/checkout) |
action | major | `v4` → `v6` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>actions/checkout (actions/checkout)</summary>

###
[`v6`](https://redirect.github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v602)

[Compare
Source](https://redirect.github.com/actions/checkout/compare/v5...v6)

- Fix tag handling: preserve annotations and explicit fetch-tags by
[@&#8203;ericsciple](https://redirect.github.com/ericsciple) in
[#&#8203;2356](https://redirect.github.com/actions/checkout/pull/2356)

###
[`v5`](https://redirect.github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v501)

[Compare
Source](https://redirect.github.com/actions/checkout/compare/v4...v5)

- Port v6 cleanup to v5 by
[@&#8203;ericsciple](https://redirect.github.com/ericsciple) in
[#&#8203;2301](https://redirect.github.com/actions/checkout/pull/2301)

</details>

---

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.github/workflows/generate-release.yml

@@ -33,7 +33,7 @@ jobs:
     
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           ref: lts
           fetch-depth: 0