chore: update nginx to 1.30

Author: hoellen

Dockerfile

@@ -1,7 +1,7 @@
 # -------------- Build-time variables --------------
 ARG NEXTCLOUD_VERSION=34.0.0
 ARG PHP_VERSION=8.4
-ARG NGINX_VERSION=1.28
+ARG NGINX_VERSION=1.30
 
 ARG ALPINE_VERSION=3.23
 ARG HARDENED_MALLOC_VERSION=14