chore(deps): update actions/github-script action to v7 (#296)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/github-script](https://togithub.com/actions/github-script) |
action | major | `v6` -> `v7` |

---

### Release Notes

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

### [`v7`](https://togithub.com/actions/github-script/compare/v6...v7)

[Compare
Source](https://togithub.com/actions/github-script/compare/v6...v7)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "before 4am on Monday" (UTC),
Automerge - At any time (no schedule defined).

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

♻ **Rebasing**: Never, 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/new_issue.yaml

@@ -11,7 +11,7 @@ jobs:
       issues: write
     steps:
       # https://docs.github.com/en/actions/managing-issues-and-pull-requests/adding-labels-to-issues
-      - uses: actions/github-script@v6
+      - uses: actions/github-script@v7
         with:
           script: |
             github.rest.issues.addLabels({