www/firefox{-esr} depends on llmv13 and not default 15

From: Nuno Teixeira <eduardo_at_freebsd.org>
Date: Wed, 30 Aug 2023 09:04:59 UTC
Hello all,

bsd.default-versions.mk LLVM is 15 and bsd.gecko.mk is also configured to
use default version llvm.

Can't understand why firefox build still depends on llvm13 or am I missing


Nuno Teixeira
FreeBSD Committer (ports)