fix: replace removed rofi nerdfont icons

modules/nixos/graphical/rofi/brightness.nix

@@ -11,9 +11,9 @@ in {
   config.brightnessCommand = builtins.toString
     (pkgs.writeShellScript "brightness" ''
 
-      dimmer=""
-      medium=""
-      brighter=""
+      dimmer="󰃝"
+      medium="󰃟"
+      brighter="󰃠"
 
       chosen=$(printf '%s;%s;%s\n' \
           "$dimmer" \

modules/nixos/graphical/rofi/power.nix

@@ -13,7 +13,7 @@ in {
     power_off=''
     reboot=''
     lock=''
-    suspend='鈴'
+    suspend='󰒲'
     log_out=''
 
     chosen=$(printf '%s;%s;%s;%s;%s\n' \