update for 8.6.0-release [build_translations]

Author: jmckenna

en/development/announce/8-6.txt

@@ -53,13 +53,13 @@ Binary Distributions
 
 Binary distributions will be available in the coming days:
 
-- Debian binaries of 8.6.0-beta1 are already available: https://tracker.debian.org/pkg/mapserver
+- Debian binaries of 8.6.0-beta2 are already available: https://tracker.debian.org/pkg/mapserver
 - `OSGeoLive <https://live.osgeo.org>`__ 17.0 release process is happening now, but
-  it will soon include MapServer 8.6.0-beta1
+  it will soon include MapServer 8.6.0-beta2
 - `UbuntuGIS <https://wiki.ubuntu.com/UbuntuGIS>`__ will follow the OSGeoLive
-  release and will then include MapServer 8.6.0-beta1
+  release and will then include MapServer 8.6.0-beta2
 - MS4W users have already been using branch-8-6 code, but watch for 
-  a new release shortly containing the 8.6.0-beta1 changes at: https://ms4w.com
+  a new release shortly containing the 8.6.0-beta2 changes at: https://ms4w.com
 
 .. TBD    
     - `RHEL and CentOS` TODO