Update dependency magnum-cluster-api to v0.29.0 (stable/2023.2)

Skip-Release-Notes

Renovate-Branch: renovate/stable/2023.2-magnum-cluster-api-0.x
Change-Id: I9e6d5bab62b8a522100552de84695558b90d91cc
diff --git a/images/magnum/Dockerfile b/images/magnum/Dockerfile
index 85512c2..a41ed67 100644
--- a/images/magnum/Dockerfile
+++ b/images/magnum/Dockerfile
@@ -18,7 +18,7 @@
 pip3 install \
     --constraint /upper-constraints.txt \
         /src/magnum \
-        magnum-cluster-api==0.28.0
+        magnum-cluster-api==0.29.0
 EOF
 
 FROM openstack-python-runtime