security/aws-c-cal: Update to 0.7.3

ChangeLog: https://github.com/awslabs/aws-c-cal/releases/tag/v0.7.3

security/aws-c-cal/Makefile

 PORTNAME=	aws-c-cal
 DISTVERSIONPREFIX=	v
-DISTVERSION=	0.7.2
+DISTVERSION=	0.7.3
 CATEGORIES=	security
 
 MAINTAINER=	eduardo@FreeBSD.org

security/aws-c-cal/distinfo

-TIMESTAMP = 1721443732
-SHA256 (awslabs-aws-c-cal-v0.7.2_GH0.tar.gz) = 265938e3f1d2baa6a555ec6b0a27c74d3f505cbe7c96f7539ada42d5a848dee9
-SIZE (awslabs-aws-c-cal-v0.7.2_GH0.tar.gz) = 1675571
+TIMESTAMP = 1723544136
+SHA256 (awslabs-aws-c-cal-v0.7.3_GH0.tar.gz) = db26e4e4d270d4ece37f81ad995f246f4626080264cfbf9ad213e582ee2a2986
+SIZE (awslabs-aws-c-cal-v0.7.3_GH0.tar.gz) = 1675635