mail/thunderbird: update to 128.8.0 (rc4)

Release Notes:
  https://www.thunderbird.net/en-US/thunderbird/128.8.0esr/releasenotes/

mail/thunderbird/Makefile

 PORTNAME=	thunderbird
 DISTVERSION=	128.8.0
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	mail news net-im wayland
 MASTER_SITES=	MOZILLA/${PORTNAME}/releases/${DISTVERSION}esr/source \
-		MOZILLA/${PORTNAME}/candidates/${DISTVERSION}esr-candidates/build3/source
+		MOZILLA/${PORTNAME}/candidates/${DISTVERSION}esr-candidates/build4/source
 DISTFILES=	${DISTNAME}esr.source${EXTRACT_SUFX}
 
 MAINTAINER=	gecko@FreeBSD.org

mail/thunderbird/distinfo

-TIMESTAMP = 1741111914
-SHA256 (thunderbird-128.8.0esr.source.tar.xz) = 1a5de206089808561a1eaf9561a72aabc0f6c587170e4af7bfc0fa686ebd906f
-SIZE (thunderbird-128.8.0esr.source.tar.xz) = 677037756
+TIMESTAMP = 1741123920
+SHA256 (thunderbird-128.8.0esr.source.tar.xz) = a9124a1a075b63e219fb8b3c9f942afe2222573193d6ee267e65f71882da8bc0
+SIZE (thunderbird-128.8.0esr.source.tar.xz) = 674078376