2.3.0

Added

• Add new require-lock-file input that forces a build failure if a composer.lock file is not present. (#251)

Fixed

• Add --working-dir when looking up Composer's cache directory. This fixes "File composer.json could not be found in the current directory" errors when running composer install in sub-directories or other non-standard locations. (#225, #233, #246, #247)
• Update cache action runner to v4 to avoid deprecation notices. (#252, #253, #254)