php: 7.2.6 -> 7.2.7 (#42461)

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/php/versions.

These checks were done:

- built on NixOS
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/phar.phar passed the binary check.
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/phar passed the binary check.
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/php passed the binary check.
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/phpdbg passed the binary check.
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/php-cgi passed the binary check.
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/pear passed the binary check.
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/peardev passed the binary check.
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/pecl passed the binary check.
- /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7/bin/php-fpm passed the binary check.
- 9 of 9 passed binary check by having a zero exit code.
- 0 of 9 passed binary check by having the new version present in output.
- found 7.2.7 with grep in /nix/store/n62w6pi30bkz1i08h1wr1icrabkky794-php-7.2.7
- directory tree listing: https://gist.github.com/6ecb6c21e261466b865908a41564ca3e
- du listing: https://gist.github.com/2ca1dc05af5d5240a6b63fadd59ee0d0