Fix regex, Update Minifier.php

[dzandrey]

Fix regex line:
example line - {"use strict";t.exports=function(t){return/^([a-z][a-z\d+-.]:)?///i.test(t)}}
after processing, the code was not cut correctly
{"use strict";t.exports=function(t){return/^([a-z][a-z\d+-.]:)?/\

[tedivm]

This project has recently upgraded its test suite to work with Github Actions and PHPUnit 10. If you are still interested in this PR please rebase and open a new PR. Thanks!