Fix: Add explicit versioning when installing PHP module dependencies

Author: ollyollyollyltd

extensions/core/memcached/install.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 set -e
-export DEPENDENCIES="php-igbinary php-msgpack"
+export DEPENDENCIES="php${PHP_VERSION}-igbinary php${PHP_VERSION}-msgpack"
 export EXTENSION=memcached
 
 # we need to do some weird stuff to get memcached working