increment $VERSION after 6.11 release

Author: oalders

Changes

@@ -1,5 +1,7 @@
 Revision history for HTTP-Daemon
 
+{{$NEXT}}
+
 6.11      2020-06-03 14:47:21Z (TRIAL RELEASE)
   - An IPv6 zone separator must be URI-quoted (GH#47) (Petr Pisar and Olaf
     Alders)

lib/HTTP/Daemon.pm

@@ -5,7 +5,7 @@ package HTTP::Daemon;
 use strict;
 use warnings;
 
-our $VERSION = '6.11';
+our $VERSION = '6.12';
 
 use Socket ();
 use IO::Socket::IP;