Icinga 2 v2.4.6 hotfix release

This one slipped through our release v2.4.5 QA with DB IDO PostgreSQL. New packages for v2.4.6 are in progress. What’s New in Version 2.4.6 Feature Feature 11638: Update RELEASE.md Bugfixes Bug 11628: Docs: Zone attribute ‘endpoints’ is an array Bug...