Merge pull request #266667 from bobby285271/upd/xfce

xfce.xfce4-whiskermenu-plugin: 2.8.0 -> 2.8.1

pkgs/desktops/xfce/panel-plugins/xfce4-whiskermenu-plugin/default.nix

···
 mkXfceDerivation {
   category = "panel-plugins";
   pname = "xfce4-whiskermenu-plugin";
-  version = "2.8.0";
+  version = "2.8.1";
   rev-prefix = "v";
   odd-unstable = false;
-  sha256 = "sha256-5ojcIOVIa9WKL2e6iZwRgrAINSM8750zciCwpn9vzJU=";
+  sha256 = "sha256-cKEybD/eTHdS1LXSS1r6QTBnfDiX7nYwnmGKTaagbrs=";
 
   nativeBuildInputs = [
     cmake