www/firefox: update to 109.0 (rc1)

Release Notes (soon):
  https://www.mozilla.org/en-US/firefox/109.0/releasenotes/

www/firefox/Makefile

@@ -1,7 +1,5 @@
 PORTNAME=	firefox
-DISTVERSION=	108.0.2
-PORTREVISION=	1
-# DISTVERSIONSUFFIX=	b9
+DISTVERSION=	109.0
 PORTEPOCH=	2
 CATEGORIES=	www wayland
 MASTER_SITES=	MOZILLA/${PORTNAME}/releases/${DISTVERSION}${DISTVERSIONSUFFIX}/source \
@@ -13,12 +11,12 @@ COMMENT=	Web browser based on the browser portion of Mozilla
 WWW=		https://www.mozilla.com/firefox
 
 BUILD_DEPENDS=	nspr>=4.32:devel/nspr \
-		nss>=3.85:security/nss \
+		nss>=3.86:security/nss \
 		icu>=71.1:devel/icu \
 		libevent>=2.1.8:devel/libevent \
 		harfbuzz>=5.3.1:print/harfbuzz \
 		graphite2>=1.3.14:graphics/graphite2 \
-		png>=1.6.37:graphics/png \
+		png>=1.6.39:graphics/png \
 		dav1d>=1.0.0:multimedia/dav1d \
 		libvpx>=1.12.0:multimedia/libvpx \
 		${PYTHON_PKGNAMEPREFIX}sqlite3>0:databases/py-sqlite3@${PY_FLAVOR} \

www/firefox/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1672880783
-SHA256 (firefox-108.0.2.source.tar.xz) = 42e6d6b27ad0694a4fc9dd736888ad36c99eb2dbcce96e134584805d644ca300
-SIZE (firefox-108.0.2.source.tar.xz) = 509638740
+TIMESTAMP = 1673297409
+SHA256 (firefox-109.0.source.tar.xz) = 892237fdead5da1ee15e98d383f5cd0cf0cfa5590ee5156f63c486abacc42291
+SIZE (firefox-109.0.source.tar.xz) = 499318384

www/firefox/files/patch-bug847568

@@ -97,13 +97,9 @@ index b91d9c1..a97e6eb 100755
  echo If gfx/graphite2/src/files.mk has changed, please make corresponding
 diff --git gfx/harfbuzz/README-mozilla gfx/harfbuzz/README-mozilla
 index 3180257..4587a3b 100644
---- gfx/harfbuzz/README-mozilla
-+++ gfx/harfbuzz/README-mozilla
-@@ -21,3 +21,8 @@ from within the gfx/harfbuzz directory.
- 
- If the collection of source files changes, manual updates to moz.build may be
- needed as we don't use the upstream makefiles.
-+
+--- /dev/null
++++ gfx/harfbuzz/README-mozilla.fbsd
+@@ -0,0 +1,4 @@
 +The in-tree copy may be omitted during build by --with-system-harfbuzz.
 +Make sure to keep pkg-config version check within toolkit/moz.configure in sync
 +with checkout version or increment latest tag by one if it's not based