devel/rubygem-aws-sigv4: Update to 1.4.0

Changes:	https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sigv4/CHANGELOG.md

devel/rubygem-aws-sigv4/Makefile

 # Created by: Sunpoet Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	aws-sigv4
-PORTVERSION=	1.2.4
+PORTVERSION=	1.4.0
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 

devel/rubygem-aws-sigv4/distinfo

-TIMESTAMP = 1625585562
-SHA256 (rubygem/aws-sigv4-1.2.4.gem) = c0e5b98aafc39f8b7ef258495de1c58698a79149c8c5aecdf464a70e9e866931
-SIZE (rubygem/aws-sigv4-1.2.4.gem) = 16384
+TIMESTAMP = 1632037856
+SHA256 (rubygem/aws-sigv4-1.4.0.gem) = 0a3be41096724a617fcfde8bb96f711c16335db42b9d2afc7a9f68b0d3f101f2
+SIZE (rubygem/aws-sigv4-1.4.0.gem) = 16896