Change livbirt version to 1.3.0 for the next release

Since the background for Admin API is merged upstream, we are bumping
the minor release version as discussed previously

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>

docs/formatdomain.html.in

@@ -4275,7 +4275,7 @@ qemu-kvm -net nic,model=? /dev/null
         element.  Each queue will potentially be handled by a different
         processor, resulting in much higher throughput.
         <span class="since">virtio-net since 1.0.6 (QEMU and KVM only)</span>
-        <span class="since">vhost-user since 1.2.17 (QEMU and KVM only)</span>
+        <span class="since">vhost-user since 1.3.0 (QEMU and KVM only)</span>
       </dd>
       <dt><code>host</code> offloading options</dt>
       <dd>