Updated Firefox to version 139.0-r0.

Author: jlesage

Dockerfile

@@ -19,7 +19,7 @@ FROM jlesage/baseimage-gui:alpine-3.22-v4.8.0
 ARG DOCKER_IMAGE_VERSION=
 
 # Define software versions.
-ARG FIREFOX_VERSION=136.0.4-r0
+ARG FIREFOX_VERSION=139.0-r0
 #ARG PROFILE_CLEANER_VERSION=2.36
 
 # Define software download URLs.