wine{Unstable,Staging}: 7.0 -> 7.1

pkgs/misc/emulators/wine/sources.nix

@@ -44,12 +44,18 @@ in rec {
     ];
   };
 
-  unstable = stable;
+  unstable = fetchurl rec {
+    # NOTE: Don't forget to change the SHA256 for staging as well.
+    version = "7.1";
+    url = "https://dl.winehq.org/wine/source/7.x/wine-${version}.tar.xz";
+    sha256 = "sha256-ETwTDu0vMlbJMv+7f0gqBTPtOsXGLJeWIqKm33+fY2o=";
+    inherit (stable) gecko32 gecko64 mono patches;
+  };
 
   staging = fetchFromGitHub rec {
     # https://github.com/wine-staging/wine-staging/releases
     inherit (unstable) version;
-    sha256 = "sha256-2gBfsutKG0ok2ISnnAUhJit7H2TLPDpuP5gvfMVE44o=";
+    sha256 = "sha256-exMQG/T6ZJggd6S1yN4wyWuNqr6GjjdG4VutGUcqZhE=";
     owner = "wine-staging";
     repo = "wine-staging";
     rev = "v${version}";