Update fort to 1.6.4

Simple update of fort to the latest release.

I use this only for interop testing purposes and recommend noone should
use this in production.
--
:wq Claudio

Index: Makefile
===================================================================
RCS file: /cvs/ports/net/fort/Makefile,v
diff -u -p -r1.4 Makefile
--- Makefile 23 Aug 2024 06:06:55 -0000 1.4
+++ Makefile 5 Dec 2024 12:36:11 -0000
@@ -1,6 +1,6 @@
COMMENT = RPKI "relying party" software

-V = 1.6.3
+V = 1.6.4
DISTNAME = fort-$V

CATEGORIES = net
Index: distinfo
===================================================================
RCS file: /cvs/ports/net/fort/distinfo,v
diff -u -p -r1.2 distinfo
--- distinfo 23 Aug 2024 06:06:55 -0000 1.2
+++ distinfo 5 Dec 2024 12:36:11 -0000
@@ -1,2 +1,2 @@
-SHA256 (fort-1.6.3.tar.gz) = m31hcvHgz1cwJAyakXz8myqKl5DQUvOQR2Mak1VA0LM=
-SIZE (fort-1.6.3.tar.gz) = 507804
+SHA256 (fort-1.6.4.tar.gz) = xIwPJbSD/YPJVoNsAw1Qisre+2xxN7wha5/pFLjh1r0=
+SIZE (fort-1.6.4.tar.gz) = 509410