mail/dovecot-fts-xapian: Update to 1.4.9

- Update to 1.4.9

Approved by:	osa (mentor)
Differential Revision:	https://reviews.freebsd.org/D29956

mail/dovecot-fts-xapian/Makefile

 PORTNAME=	fts-xapian
-DISTVERSION=	1.4.8
-PORTREVISION=	1
+DISTVERSION=	1.4.9
+DISTVERSIONSUFFIX=	b
 CATEGORIES=	mail
 PKGNAMEPREFIX=	dovecot-
 

mail/dovecot-fts-xapian/distinfo

-TIMESTAMP = 1615668346
-SHA256 (grosjo-fts-xapian-1.4.8_GH0.tar.gz) = 547cc87425c59d5fbb3b7f81120f0bd01dd6c78ad234d3d750c02f421804e374
-SIZE (grosjo-fts-xapian-1.4.8_GH0.tar.gz) = 29381
+TIMESTAMP = 1619805639
+SHA256 (grosjo-fts-xapian-1.4.9b_GH0.tar.gz) = d610cbd2e7b16a43fa27179494a9df4506e94612ba99a25839094e6aae033570
+SIZE (grosjo-fts-xapian-1.4.9b_GH0.tar.gz) = 278187