chore(deps): update pascalgn/automerge-action action to v0.16.4 by renovate (#26769)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[pascalgn/automerge-action](https://redirect.github.com/pascalgn/automerge-action)
| action | patch | `v0.16.3` -> `v0.16.4` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>pascalgn/automerge-action (pascalgn/automerge-action)</summary>

###
[`v0.16.4`](https://redirect.github.com/pascalgn/automerge-action/releases/tag/v0.16.4):
Release 0.16.4

[Compare
Source](https://redirect.github.com/pascalgn/automerge-action/compare/v0.16.3...v0.16.4)

#### What's Changed

- Allow set of `MAX_PR_COUNT` from environment by
[@&#8203;agershman](https://redirect.github.com/agershman) in
[https://github.com/pascalgn/automerge-action/pull/286](https://redirect.github.com/pascalgn/automerge-action/pull/286)
- Fix permissions configuration in README example by
[@&#8203;zimagen](https://redirect.github.com/zimagen) in
[https://github.com/pascalgn/automerge-action/pull/285](https://redirect.github.com/pascalgn/automerge-action/pull/285)

#### New Contributors

- [@&#8203;agershman](https://redirect.github.com/agershman) made their
first contribution in
[https://github.com/pascalgn/automerge-action/pull/286](https://redirect.github.com/pascalgn/automerge-action/pull/286)
- [@&#8203;zimagen](https://redirect.github.com/zimagen) made their
first contribution in
[https://github.com/pascalgn/automerge-action/pull/285](https://redirect.github.com/pascalgn/automerge-action/pull/285)

**Full Changelog**:
https://github.com/pascalgn/automerge-action/compare/v0.16.3...v0.16.4

</details>

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### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **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

---

This PR has been generated by [Renovate
Bot](https://redirect.github.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC45My4yIiwidXBkYXRlZEluVmVyIjoiMzguOTMuMiIsInRhcmdldEJyYW5jaCI6Im1hc3RlciIsImxhYmVscyI6WyJhdXRvbWVyZ2UiXX0=-->

.github/workflows/pr-validate.yaml

@@ -73,7 +73,7 @@ jobs:
         with:
           github-token: "${{ secrets.OR_PAT }}"
       - name: automerge
-        uses: pascalgn/automerge-action@d1203c0bf94a827b991e5de69d662e9163304fa0 # v0.16.3
+        uses: pascalgn/automerge-action@7961b8b5eec56cc088c140b56d864285eabd3f67 # v0.16.4
         env:
           GITHUB_TOKEN: "${{ secrets.BOT_TOKEN }}"
           UPDATE_RETRIES: 12