x11-toolkits/rubygem-gtksourceview4: Update to 4.2.7

Changes:	https://github.com/ruby-gnome/ruby-gnome/releases
		https://github.com/ruby-gnome/ruby-gnome/blob/main/NEWS.md

x11-toolkits/rubygem-gtksourceview4/Makefile

 PORTNAME=	gtksourceview4
-PORTVERSION=	4.2.6
+PORTVERSION=	4.2.7
 CATEGORIES=	x11-toolkits rubygems
 MASTER_SITES=	RG
 

x11-toolkits/rubygem-gtksourceview4/distinfo

-TIMESTAMP = 1738090212
-SHA256 (rubygem/gtksourceview4-4.2.6.gem) = 61a88fa78de043768cf203d3dfeebee4b510ea9a0078dc9f2ede2b970e6da145
-SIZE (rubygem/gtksourceview4-4.2.6.gem) = 16896
+TIMESTAMP = 1738606675
+SHA256 (rubygem/gtksourceview4-4.2.7.gem) = 20dee0eaf9a101480bbf785a5f053d8cc00ffa3cc57ec77375d26e3b1632cf25
+SIZE (rubygem/gtksourceview4-4.2.7.gem) = 16896