Merge branch 'chore/elixir-1.11' into 'develop'

Elixir 1.11 compatibility / Phoenix 1.5+

See merge request pleroma/pleroma!3059

mix.exs

@@ -114,10 +114,10 @@ defmodule Pleroma.Mixfile do
   # Type `mix help deps` for examples and options.
   defp deps do
     [
-      {:phoenix, "~> 1.4.17"},
+      {:phoenix, "~> 1.5.5"},
       {:tzdata, "~> 1.0.3"},
       {:plug_cowboy, "~> 2.3"},
-      {:phoenix_pubsub, "~> 1.1"},
+      {:phoenix_pubsub, "~> 2.0"},
       {:phoenix_ecto, "~> 4.0"},
       {:ecto_enum, "~> 1.4"},
       {:ecto_sql, "~> 3.4.4"},
@@ -165,9 +165,16 @@ defmodule Pleroma.Mixfile do
       {:telemetry, "~> 0.3"},
       {:poolboy, "~> 1.5"},
       {:prometheus, "~> 4.6"},
-      {:prometheus_ex, "~> 3.0"},
+      {:prometheus_ex,
+       git: "https://git.pleroma.social/pleroma/elixir-libraries/prometheus.ex.git",
+       ref: "a4e9beb3c1c479d14b352fd9d6dd7b1f6d7deee5",
+       override: true},
       {:prometheus_plugs, "~> 1.1"},
       {:prometheus_phoenix, "~> 1.3"},
+      # Note: once `prometheus_phx` is integrated into `prometheus_phoenix`, remove the former:
+      {:prometheus_phx,
+       git: "https://git.pleroma.social/pleroma/elixir-libraries/prometheus-phx.git",
+       branch: "no-logging"},
       {:prometheus_ecto, "~> 1.4"},
       {:recon, "~> 2.5"},
       {:quack, "~> 0.1.1"},