security/headscale: Update to 0.16.4

PR:		265970
Approved by:	Michael Muenz <m dot muenz at gmail dot com> (maintainer)

security/headscale/Makefile

 PORTNAME=	headscale
-PORTVERSION=	0.16.3
+PORTVERSION=	0.16.4
 DISTVERSIONPREFIX=	v
 CATEGORIES=	security
 

security/headscale/distinfo

-TIMESTAMP = 1660817629
-SHA256 (go/security_headscale/headscale-v0.16.3/v0.16.3.mod) = 5a1e6a81c94588289a91ad0ed5afab20d2c472a7acaedbf5315bbfc267865bf9
-SIZE (go/security_headscale/headscale-v0.16.3/v0.16.3.mod) = 6809
-SHA256 (go/security_headscale/headscale-v0.16.3/v0.16.3.zip) = 8bca8d472881fa9852b437e850b65d7699fbf3234b3796ce8df3cd26bb668ed6
-SIZE (go/security_headscale/headscale-v0.16.3/v0.16.3.zip) = 461913
+TIMESTAMP = 1661076406
+SHA256 (go/security_headscale/headscale-v0.16.4/v0.16.4.mod) = 5a1e6a81c94588289a91ad0ed5afab20d2c472a7acaedbf5315bbfc267865bf9
+SIZE (go/security_headscale/headscale-v0.16.4/v0.16.4.mod) = 6809
+SHA256 (go/security_headscale/headscale-v0.16.4/v0.16.4.zip) = 14f0a916f5477479b73501da559c84874d5ef9bd05ad029ab16049a298aa9c63
+SIZE (go/security_headscale/headscale-v0.16.4/v0.16.4.zip) = 464386