devel/pecl-ev: update to 1.1.5 release

Changelog: https://pecl.php.net/package-changelog.php?package=ev&release=1.1.5

Fixed #44: segmentation fault when the watcher is destroyed in its callback and an exception is thrown.
Issue #40: Fixed PHP 8 Windows build: the list of source files in config.w32 was incorrect for PHP 8.