[stable/zed] Bump magnum-cluster-api to 0.19.2 [CLOUDOPS-224] (#1422)

This is an automated cherry-pick of #1416
/assign mnaser
diff --git a/images/magnum/Dockerfile b/images/magnum/Dockerfile
index a3126de..0e0e03c 100644
--- a/images/magnum/Dockerfile
+++ b/images/magnum/Dockerfile
@@ -21,7 +21,7 @@
 pip3 install \
     --constraint /upper-constraints.txt \
         /src/magnum \
-        magnum-cluster-api==0.19.1
+        magnum-cluster-api==0.19.2
 EOF
 
 FROM registry.atmosphere.dev/library/openstack-python-runtime:${RELEASE}