chore(deps): update mlocati/php-extension-installer docker tag to v2.2.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
mlocati/php-extension-installer	stage	patch	2.2.2 -> 2.2.3

---

Release Notes

mlocati/docker-php-extension-installer (mlocati/php-extension-installer)

### [`v2.2.3`](https://togithub.com/mlocati/docker-php-extension-installer/releases/tag/2.2.3) [Compare Source](https://togithub.com/mlocati/docker-php-extension-installer/compare/2.2.2...2.2.3) - Fix installing protobuf on PHP 8.0 ([#​899](https://togithub.com/mlocati/docker-php-extension-installer/issues/899))

---

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.

---

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

---

This PR has been generated by Mend Renovate. View repository job log here.