chore(deps): update actions/stale action to v8 (#4399)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/stale](https://github.com/actions/stale) | action | major |
`v7` -> `v8` |

---

### Release Notes

<details>
<summary>actions/stale</summary>

### [`v8`](https://github.com/actions/stale/compare/v7...v8)

[Compare Source](https://github.com/actions/stale/compare/v7...v8)

</details>

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.github/workflows/stale.yml

@@ -8,7 +8,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v7
+      - uses: actions/stale@v8
         with:
           # The number of days old an issue can be before marking it stale. Set to -1 to never mark issues or pull requests as stale automatically.
           days-before-stale: 14