nixos/wireshark: set the correct capabilities

nixos/modules/programs/wireshark.nix

···
 
     security.wrappers.dumpcap = {
       source = "${wireshark}/bin/dumpcap";
-      capabilities = "cap_net_raw+p";
+      capabilities = "cap_net_raw,cap_net_admin+eip";
       owner = "root";
       group = "wireshark";
       permissions = "u+rx,g+x";