games/dxx-rebirth: update to 20211220

games/dxx-rebirth/Makefile

 PORTNAME=	dxx-rebirth
-PORTVERSION=	20211125
+PORTVERSION=	20211220
 DISTVERSIONSUFFIX=	-src
 CATEGORIES=	games
 MASTER_SITES=	https://www.dxx-rebirth.com/download/dxx/rebirth/

games/dxx-rebirth/distinfo

-TIMESTAMP = 1637886343
-SHA256 (dxx-rebirth_20211125-src.tar.xz) = 12ce1c2b2ab0971ec9496277ad87dd22ac12aa29dfb78e116ee10e9133ecbc90
-SIZE (dxx-rebirth_20211125-src.tar.xz) = 1352760
+TIMESTAMP = 1640970147
+SHA256 (dxx-rebirth_20211220-src.tar.xz) = 4a544bbb564b1185041d12dff97f3ba05ee4a911795dfa882c91e577c33ee2c9
+SIZE (dxx-rebirth_20211220-src.tar.xz) = 1355232