Use PKG_CONFIG_PATH instead of --with-onig to configure mbstring
Use PKG_CONFIG_PATH instead of --with-onig to configure mbstring

See https://www.php.net/manual/en/migration74.other-changes.php

> `--with-onig` has been removed. Unless `--disable-mbregex` has been passed, libonig is required.

phpbrew/phpbrew,phpbrew/phpbrew,phpbrew/phpbrew