Update extensions path for php 8.0
Update extensions path for php 8.0

Signed-off-by: Forest Eckhardt <4b00265404c4bf28abd357da6e3ed2185c574dc6@vmware.com>

cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,cloudfoundry/php-buildpack