Update release notes for 3.12.11 release

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Translation updates for 3.12.11 release

(cherry picked from commit afa4450d02123c595300af726af4717184b7efe7)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Increment version for 3.12.11 release

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>