Bump ueberauth version because of a CRSF security issue

ueberauth_discord is dropped because it's abandonned

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

mix.exs

@@ -176,12 +176,11 @@ defmodule Mobilizon.Mixfile do
       {:floki, "~> 0.31"},
       {:ip_reserved, "~> 0.1.0"},
       {:fast_sanitize, "~> 0.1"},
-      {:ueberauth, "~> 0.6"},
+      {:ueberauth, "~> 0.7"},
       {:ueberauth_twitter, "~> 0.4"},
-      {:ueberauth_github, "~> 0.7"},
-      {:ueberauth_facebook, "~> 0.8"},
-      {:ueberauth_discord, "~> 0.5"},
-      {:ueberauth_google, "~> 0.10"},
+      {:ueberauth_github, "~> 0.8.1"},
+      {:ueberauth_facebook, "~> 0.9"},
+      {:ueberauth_google, "~> 0.10.1"},
       {:ueberauth_keycloak_strategy,
        git: "https://github.com/tcitworld/ueberauth_keycloak.git", branch: "upgrade-deps"},
       {:ueberauth_gitlab_strategy,