Update actions/checkout action to v6 (#174)
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://redirect.github.com/actions/checkout) |
action | major | `v5` -> `v6` |
---
### Release Notes
<details>
<summary>actions/checkout (actions/checkout)</summary>
### [`v6`](https://redirect.github.com/actions/checkout/compare/v5...v6)
[Compare
Source](https://redirect.github.com/actions/checkout/compare/v5...v6)
</details>
---
### 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.
---
- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box
---
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