Update actions/github-script action to v7 (#658)

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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` |

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### 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>

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### 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.

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 - [ ] If you want to rebase/retry this PR, check this box

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.github/workflows/notify_release.yml

@@ -9,7 +9,7 @@ jobs:
   notify:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/github-script@v6
+      - uses: actions/github-script@v7
         id: notify-new-release
         with:
           result-encoding: string