Bump versions

Bump Prometheus, Trickster, and pushgateway to the latest release.
2 jobs for <span class="ref-name">bjk/bump_am_prom</span> in 3 minutes and 21 seconds
Status Job ID Name Coverage
  Test
passed #196705054
rspec

00:01:56

 
  Lint
passed #196705055
cookstyle

00:01:24