Relax constraints of support dependencies

Author: khamilowicz

mix.exs

@@ -39,9 +39,9 @@ defmodule Membrane.Hackney.Plugin.Mixfile do
       {:membrane_core, "~> 1.0"},
       {:hackney, "~> 1.16"},
       {:mockery, "~> 2.3", runtime: false},
-      {:ex_doc, "~> 0.34", only: :dev, runtime: false},
-      {:dialyxir, "~> 1.4", only: :dev, runtime: false},
-      {:credo, "~> 1.7", only: :dev, runtime: false}
+      {:ex_doc, ">= 0.0.0", only: :dev, runtime: false},
+      {:dialyxir, ">= 0.0.0", only: :dev, runtime: false},
+      {:credo, ">= 0.0.0", only: :dev, runtime: false}
     ]
   end
 
@@ -58,8 +58,7 @@ defmodule Membrane.Hackney.Plugin.Mixfile do
 
   defp dialyzer() do
     opts = [
-      flags: [:error_handling],
-      plt_add_apps: [:mix, :syntax_tools]
+      flags: [:error_handling]
     ]
 
     if System.get_env("CI") == "true" do