[UK] Bump collections to 1.2.3 version (#1572)
[UK] Bump collections to 1.2.3 version (#1572)


doomspork/elixir-school,nscyclone/elixir-school,doomspork/elixir-school,doomspork/elixir_school,doomspork/elixir_school,nscyclone/elixir-school,nscyclone/elixir-school,doomspork/elixir-school,nscyclone/elixir-school,doomspork/elixir_school