amnezia-vpn: 4.8.8.3 -> 4.8.9.1

pkgs/by-name/am/amnezia-vpn/package.nix

···
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "amnezia-vpn";
-  version = "4.8.8.3";
+  version = "4.8.9.1";
 
   src = fetchFromGitHub {
     owner = "amnezia-vpn";
     repo = "amnezia-client";
     tag = finalAttrs.version;
-    hash = "sha256-hDbrp6eT+avFepJL55Vl2alOD+IMnyy8MPXZQTEmLJo=";
+    hash = "sha256-docQqOVzmgqWPhKzOmKeXhssjyhtfYy1fNn0ZGXjsZ0=";
     fetchSubmodules = true;
   };