fix(pinentry)!: Switch to gnome3 pinentry

I've been experiencing trouble entering my pin in some cases (pinentry
exiting without accepting a pin), and using gnome3 pinentry rather than
gtk2 appears to solve the issue.

Change-Id: Ie940c8dfba4c9c0108bc44bd1710c61b67c50462
Reviewed-on: https://git.clicks.codes/c/Chimera/NixFiles/+/748
Reviewed-by: Samuel Shuert <coded@clicks.codes>
Tested-by: Skyler Grey <minion@clicks.codes>
diff --git a/modules/home/gpg/default.nix b/modules/home/gpg/default.nix
index d5dadd5..8d4e891 100644
--- a/modules/home/gpg/default.nix
+++ b/modules/home/gpg/default.nix
@@ -21,7 +21,7 @@
 
     services.gpg-agent = {
       enable = true;
-      pinentryPackage = pkgs.pinentry-gtk2;
+      pinentryPackage = pkgs.pinentry-gnome3;
       enableZshIntegration = config.chimera.shell.zsh.enable;
       enableBashIntegration = config.chimera.shell.bash.enable;
     };