Add new version line: php 8.5.1

[cf-buildpacks-eng]

Please edit the dependency-builds pipeline to add the new version line to the relevant dependency/buildpack.

For nginx/nginx-static: Also remove older mainline/stable version.
E.g. If you are adding nginx 1.22, you will remove 1.20. If you are adding 1.23, you will remove 1.21

{source:{name:php,type:php},version:{ref:8.5.1,url:https://php.net/distributions/php-8.5.1.tar.gz,sha256:915492958081409a5e3ef99df969bcfa5b33bdf9517bd077991747e17fa2c1b7}}