[SETUP]: Bump php from 7.4.30-fpm to 7.4.32-fpm in /docker/app/php7.4

Bumps php from 7.4.30-fpm to 7.4.32-fpm.

---
updated-dependencies:
- dependency-name: php
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

docker/app/php7.4/Dockerfile

@@ -1,4 +1,4 @@
-FROM php:7.4.30-fpm
+FROM php:7.4.32-fpm
 
 ARG USER_ID
 ARG GROUP_ID