bind: 9.16.7 -> 9.16.8

https://bind9.readthedocs.io/en/v9_16_8/notes.html#notes-for-bind-9-16-8

pkgs/servers/dns/bind/default.nix

@@ -10,11 +10,11 @@ assert enablePython -> python3 != null;
 
 stdenv.mkDerivation rec {
   pname = "bind";
-  version = "9.16.7";
+  version = "9.16.8";
 
   src = fetchurl {
     url = "https://downloads.isc.org/isc/bind9/${version}/${pname}-${version}.tar.xz";
-    sha256 = "1l8lhgnkj3fnl1101bs3pzj5gv2x5m9ahvrbyscsc9mxxc91hzcz";
+    sha256 = "0ccdbqmpvnxlbrxjsx2w8ir4xh961svzcw7n87n8dglj6rb9r6wy";
   };
 
   outputs = [ "out" "lib" "dev" "man" "dnsutils" "host" ];