chore(deps): update actions/github-script action to v9 (#432)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[actions/github-script](https://redirect.github.com/actions/github-script)
| action | major | `v8` → `v9` |

---

### Release Notes

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

###
[`v9`](https://redirect.github.com/actions/github-script/compare/v8...v9)

[Compare
Source](https://redirect.github.com/actions/github-script/compare/v8...v9)

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - At any time (no schedule defined)
- Automerge
  - At any time (no schedule defined)

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, 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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View the [repository job
log](https://developer.mend.io/github/canonical/identity-platform-login-ui-operator).

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Author: canonical-iam

.github/workflows/terraform_module.yaml

@@ -31,7 +31,7 @@
           run: terraform validate -no-color
           working-directory: terraform
 
-        - uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
+        - uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9
           if: github.event_name == 'pull_request'
           env:
             PLAN: "terraform\n${{ steps.plan.outputs.stdout }}"