feat: add php8.5

fix: Added return type

perf: Optimize some code

perf: Optimize the eval expression during enforce

fix: applyModifiedModel, let the original exception be thrown

perf: Improve some code

fix: str_getcsv(): the parameter must be provided as its default valu…

…e will change

fix: support php8.4

Merge pull request #167 from php-casbin/4.x

BREAKING CHANGE: Upgrade the minimum PHP version to 8.0.

fix(#158): fixed permission check failure under specific conditions. (#…

…159)