[FIX] www/p5-CGI-Session missing RUN_DEPENDS on p5-CGI

I noticed while running some reverse dependency tests that this was
failing due to a missing RUN_DEPENDS on p5-CGI, an easy change.

OK? (I think just the REVISION bump is needed, right?)

Index: Makefile
===================================================================
RCS file: /cvs/ports/www/p5-CGI-Session/Makefile,v
retrieving revision 1.9
diff -u -p -r1.9 Makefile
--- Makefile 20 Mar 2016 19:57:14 -0000 1.9
+++ Makefile 2 Mar 2019 23:00:47 -0000
@@ -6,9 +6,12 @@ MODULES= cpan
PKG_ARCH= *
DISTNAME= CGI-Session-4.48
CATEGORIES= www
+REVISION= 0

# Perl
PERMIT_PACKAGE_CDROM= Yes
+
+RUN_DEPENDS = www/p5-CGI

TEST_DEPENDS= databases/p5-DBI \
databases/p5-DBD-SQLite \