discourse.plugins.discourse-github: Update

pkgs/servers/web-apps/discourse/plugins/discourse-github/Gemfile.lock

···
   specs:
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
-    faraday (1.7.0)
+    faraday (1.8.0)
       faraday-em_http (~> 1.0)
       faraday-em_synchrony (~> 1.0)
       faraday-excon (~> 1.1)
···
   sawyer (= 0.8.2)
 
 BUNDLED WITH
-   2.2.20
+   2.2.24

pkgs/servers/web-apps/discourse/plugins/discourse-github/default.nix

···
   src = fetchFromGitHub {
     owner = "discourse";
     repo = "discourse-github";
-    rev = "b6ad8e39a13e2ad5c6943ea697ca23f2c5f9fec1";
-    sha256 = "0vxwp4kbf44clcqilb8ni0ykk4jrgiv4rbd05pgfvndcp3izm2i6";
+    rev = "9aaf4350968fb758f9bff3588f78e3ad24ddb4b0";
+    sha256 = "0nmpkh1rr0jv68a655f5610v2mn09xriiqv049a0gklap2lgv7p8";
   };
   meta = with lib; {
     homepage = "https://github.com/discourse/discourse-github";

pkgs/servers/web-apps/discourse/plugins/discourse-github/gemset.nix

···
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0r6ik2yvsbx6jj30vck32da2bbvj4m0gf4jhp09vr75i1d6jzfvb";
+      sha256 = "0afhlqgby2cizcwgh7h2sq5f77q01axjbdl25bsvfwsry9n7gyyi";
       type = "gem";
     };
-    version = "1.7.0";
+    version = "1.8.0";
   };
   faraday-em_http = {
     groups = ["default"];