Update Janus Gateway to 0.12.3

[Stell0]

Last version of Janus available for our major branch is 0.12.3. Update it in the hope that it will solve some ghost issues not reproducible

[nethbot]

in 7.9.2009/nethesis-testing:

• nethcti3-3.28.7-1.1.g2f68e5f.ns7.noarch.rpm x86_64

[Stell0]

in 7.9.2009/nethserver-testing:

• janus-gateway-0.12.3-1.1.g6be4651.ns7.x86_64.rpm x86_64

[nethbot]

in 7.9.2009/nethesis-updates:

• nethcti3-3.28.8-1.ns7.noarch.rpm x86_64

[Stell0]

in 7.9.2009/nethserver-updates:

• janus-gateway-0.12.3-1.ns7.x86_64.rpm x86_64

[Stell0]

in 7.9.2009/nethserver-updates:

• nethserver-janus-1.2.3-1.ns7.noarch.rpm x86_64