chore(deps): update actions/github-script action to v8 (#457)

This PR contains the following updates:

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

---

### Release Notes

<details>
<summary>actions/github-script (actions/github-script)</summary>

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

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

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "every weekday" (UTC), 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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.github/workflows/update-new-issue.yaml

@@ -14,7 +14,7 @@ jobs:
 
         steps:
             # Add the "t-tooling" label to all new issues
-            - uses: actions/github-script@v7
+            - uses: actions/github-script@v8
               with:
                   script: |
                       github.rest.issues.addLabels({