graphics/libgeotiff: Update to 1.7.4

Changes:	https://github.com/OSGeo/libgeotiff/releases
		https://lists.osgeo.org/pipermail/geotiff/2025-February/000895.html

graphics/libgeotiff/Makefile

 PORTNAME=	libgeotiff
-PORTVERSION=	1.7.3
-PORTREVISION=	2
+PORTVERSION=	1.7.4
 CATEGORIES=	graphics
 MASTER_SITES=	https://github.com/OSGeo/libgeotiff/releases/download/${PORTVERSION}/ \
 		https://download.osgeo.org/geotiff/libgeotiff/

graphics/libgeotiff/distinfo

-TIMESTAMP = 1716892232
-SHA256 (libgeotiff-1.7.3.tar.gz) = ba23a3a35980ed3de916e125c739251f8e3266be07540200125a307d7cf5a704
-SIZE (libgeotiff-1.7.3.tar.gz) = 547548
+TIMESTAMP = 1740022438
+SHA256 (libgeotiff-1.7.4.tar.gz) = c598d04fdf2ba25c4352844dafa81dde3f7fd968daa7ad131228cd91e9d3dc47
+SIZE (libgeotiff-1.7.4.tar.gz) = 549848