Cache doesn't work for local-php-security-checker

[deviantintegral]

Run composer install -vvv multiple times and see that it always redownloads the binary:

> post-install-cmd: Lullabot\DrainpipeDev\DevBinaryInstallerPlugin->onPostInstallCmd
Downloading https://github.com/fabpot/local-php-security-checker/releases/download/v2.0.6/local-php-security-checker_2.0.6_linuDownloading https://github.com/fabpot/local-php-security-checker/releases/download/v2.0.6/local-php-security-checker_2.0.6_linu[302] https://github.com/fabpot/local-php-security-checker/releases/download/v2.0.6/local-php-security-checker_2.0.6_linux_arm6[302] https://github.com/fabpot/local-php-security-checker/releases/download/v2.0.6/local-php-security-checker_2.0.6_linux_arm6