update changelog for 1.6.0

Merge remote-tracking branch 'origin/master'

Merge remote-tracking branch 'origin/master'

expired context should not impact database calls

add mutex to sqlite3 db operations

Merge pull request drone#55 from tboerger/scaleway-fixes

Fix scaleway provider for all arches

Merge remote-tracking branch 'origin/master'

enforce ping timeout in install routine

Merge pull request drone#47 from msaizar/gc-collector

Pull Garbage Collector image

updated changelog for 1.2.1 [CI SKIP]