signal-desktop: 6.17.1 -> 6.21.0, signal-desktop-beta: 6.18.0-beta.2 …

…-> 6.22.0-beta.3 (#238804)

The download URL was changed to match the Packages file[^1] from the deb
mirror since the previous URL would 404 for current versions.

[^1]: https://updates.signal.org/desktop/apt/dists/xenial/main/binary-amd64/Packages

(cherry picked from commit 4625956)

Co-authored-by: Moritz 'e1mo' Fromm <git@e1mo.de>

pkgs/applications/networking/instant-messengers/signal-desktop/default.nix

@@ -1,12 +1,12 @@
 { callPackage }: builtins.mapAttrs (pname: attrs: callPackage ./generic.nix (attrs // { inherit pname; })) {
   signal-desktop = {
     dir = "Signal";
-    version = "6.17.1";
-    hash = "sha256-9m9+waQgQQk/7T7d4UZY3PqgPEhseaXmI8lZ5oiI92A=";
+    version = "6.21.0";
+    hash = "sha256-MDjh2slEmGCMn0Q4YsIzVQO2I7ZE5XUJX5qH4OYFFxw=";
   };
   signal-desktop-beta = {
     dir = "Signal Beta";
-    version = "6.18.0-beta.2";
-    hash = "sha256-qfBc1+XwHbD/FAGLezmgOJsAYn4ZTuGU4w1aR8g/2U0=";
+    version = "6.22.0-beta.3";
+    hash = "sha256-Obc7JHfsFrkJkcgm/i9/6hDsoHczqz7txg4W+u/Jems=";
   };
 }

pkgs/applications/networking/instant-messengers/signal-desktop/generic.nix

@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
   # few additional steps and might not be the best idea.)
 
   src = fetchurl {
-    url = "https://updates.signal.org/desktop/apt/pool/main/s/${pname}/${pname}_${version}_amd64.deb";
+    url = "https://updates.signal.org/desktop/apt/pool/s/${pname}/${pname}_${version}_amd64.deb";
     inherit hash;
   };