misc/nnn: Update version 4.8=>4.9

Changelog: https://github.com/jarun/nnn/releases/tag/v4.9

PR:		273512
Approved by:	dmgk (maintainer-timeout)

misc/nnn/Makefile

 PORTNAME=	nnn
 DISTVERSIONPREFIX=	v
-DISTVERSION=	4.8
+DISTVERSION=	4.9
 CATEGORIES=	misc shells
 
 MAINTAINER=	dmgk@FreeBSD.org

misc/nnn/distinfo

-TIMESTAMP = 1693296816
-SHA256 (jarun-nnn-v4.8_GH0.tar.gz) = 0a744e67a0ce8b5e1e04961f542d2c33ddb6ceed46ba760dd35c4922b21f1146
-SIZE (jarun-nnn-v4.8_GH0.tar.gz) = 253547
+TIMESTAMP = 1702803500
+SHA256 (jarun-nnn-v4.9_GH0.tar.gz) = 9e25465a856d3ba626d6163046669c0d4010d520f2fb848b0d611e1ec6af1b22
+SIZE (jarun-nnn-v4.9_GH0.tar.gz) = 255144