[npp-bot]: Bump phpmyadmin in /phpmyadmin

Bumps phpmyadmin from 5.2.2-apache to 5.2.3-apache.

---
updated-dependencies:
- dependency-name: phpmyadmin
  dependency-version: 5.2.3-apache
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

phpmyadmin/Dockerfile

@@ -6,7 +6,7 @@
 # ----------------------------------------------------------------------------     #
 
 # Here the magic, the rest of it is ordinary
-FROM phpmyadmin:5.2.2-apache
+FROM phpmyadmin:5.2.3-apache
 
 # Install necessary packages
 RUN apt-get update && apt-get install -y \