Update php Docker tag to v8.3.2

This MR contains the following updates:

Package	Type	Update	Change
php	final	patch	8.3.1-apache-bookworm -> 8.3.2-apache-bookworm

---

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 MR becomes conflicted, or you tick the rebase/retry checkbox.

Ignore: Close this MR and you won't be reminded about this update again.

---

• If you want to rebase/retry this MR, check this box

---

This MR has been generated by Renovate Bot.

webserver/docker_dokuwiki/templates/Dockerfile

-FROM php:8.3.1-apache-bookworm
+FROM php:8.3.2-apache-bookworm
 
 # php-gd modul für dw2pdf plugin
 RUN apt-get update && apt-get install -y \