Kthxbye Versions Save

Fixed panics when basic auth is used in alertmanager URI - #449

Dependency updates

Expiring silences with active alerts didn't get extended properly due to a bug introduced in v0.13, this is fixed now.

This version lowers memory usage by streaming JSON responses - #292

Streaming bugfixes

This version lowers memory usage by streaming JSON responses - #292

Build using alertmanager v0.23 modules

Update Go to 1.16.3

Pushed docker images to ghcr.io/prymitive/kthxbye