textproc/rubygem-actiontext70: Update to 7.0.8.3

Changes:	https://github.com/rails/rails/releases
Security:	CVE-2024-34341
(cherry picked from commit 23330c59)

textproc/rubygem-actiontext70/Makefile

 PORTNAME=	actiontext
-PORTVERSION=	7.0.8.1
+PORTVERSION=	7.0.8.3
 CATEGORIES=	textproc rubygems
 MASTER_SITES=	RG
 PKGNAMESUFFIX=	70

textproc/rubygem-actiontext70/distinfo

-TIMESTAMP = 1709391036
-SHA256 (rubygem/actiontext-7.0.8.1.gem) = 42e4cd0e7e8f98a8ed96d04b1d6ab83bb69afc4ceb0a46f5c18ef60fff889810
-SIZE (rubygem/actiontext-7.0.8.1.gem) = 92160
+TIMESTAMP = 1716142246
+SHA256 (rubygem/actiontext-7.0.8.3.gem) = 4d05ee5e6d973f54e7b8477f4eade720fa2651f26f85866101cef7cb4f65bedb
+SIZE (rubygem/actiontext-7.0.8.3.gem) = 83456