Changes since v0.27.2

Fixes

• security: changes base docker image cda2127
• vmagent: fixes incorrect usage of remoteWriteSettings VictoriaMetrics/VictoriaMetrics#2946
• vmalert: password_file usage 4516316

Features

• converter: adds support for prometheus AlertmanagerConfig. It converts into VMAlertmanagerConfig. 0b99bc0
• vmalert: tokenFilePath support for any remote endpoint 5b010f4