chore: flake update

shared/home-manager/common.nix

@@ -81,7 +81,7 @@
     fastfetch
     firefox
     pavucontrol
-    protonvpn-gui # WARNING: Marked as broken https://github.com/NixOS/nixpkgs/commit/84faa614a5256a84e3dd4e445053ff76f4c0a5d4
+    proton-vpn
     qbittorrent
     qdirstat
     speedcrunch
@@ -128,7 +128,6 @@
     kdePackages.ark
     loupe
     slurp
-    swww
 
     # Mail client
     thunderbird

shared/home-manager/dotfiles/git.nix

@@ -5,6 +5,7 @@
   programs.git = {
     enable = true;
     lfs.enable = true;
+    signing.format = "openpgp";
 
     settings = {
       aliases = {

shared/home-manager/theming.nix

@@ -61,8 +61,12 @@
       gtk-application-prefer-dark-theme = true;
     };
 
-    gtk4.extraConfig = {
-      gtk-application-prefer-dark-theme = true;
+    gtk4 = {
+      theme = null;
+
+      extraConfig = {
+        gtk-application-prefer-dark-theme = true;
+      };
     };
 
     iconTheme = {