Drop PHP 7.2

The base image uses Debian 10, whose repos are offline since the release
of Debian 13, so it cannot be built anymore.

Author: nymous

README.md

@@ -3,7 +3,6 @@
 A PHP + Apache docker image with useful extensions preinstalled
 
 The following versions of the image are available:
-  - PHP 7.2
   - PHP 7.3
   - PHP 7.4
   - PHP 8.0

update.sh

@@ -2,7 +2,7 @@
 
 set -euo pipefail
 
-versions=(7.2 7.3 7.4 8.0 8.1 8.2 8.3 8.4)
+versions=(7.3 7.4 8.0 8.1 8.2 8.3 8.4)
 
 for version in "${versions[@]}"; do