libguestfs: update maintainership

pkgs/by-name/li/libguestfs-appliance/package.nix

@@ -29,6 +29,7 @@ stdenvNoCC.mkDerivation rec {
       gpl2Plus
       lgpl2Plus
     ];
+    maintainers = with maintainers; [ lukts30 ];
     platforms = [
       "i686-linux"
       "x86_64-linux"

pkgs/by-name/li/libguestfs/package.nix

@@ -183,7 +183,10 @@ stdenv.mkDerivation rec {
       lgpl21Plus
     ];
     homepage = "https://libguestfs.org/";
-    maintainers = with maintainers; [ offline ];
+    maintainers = with maintainers; [
+      offline
+      lukts30
+    ];
     platforms = platforms.linux;
     # this is to avoid "output size exceeded"
     hydraPlatforms = if appliance != null then appliance.meta.hydraPlatforms else platforms.linux;