Hex v2.6 released

Hex 2.5 was about making it harder for a malicious or compromised release to reach your system, with security advisories in your terminal, a release-age cooldown and dependency policies. Hex 2.6 and hex.pm continue that work. Policy overrides can now accept a specific advisory, retirement reason or the cooldown for a package, and policies can check the packages already in mix.lock .