Remove Magnum build footer & update reno

Author: cityofships

etc/kayobe/kolla.yml

@@ -342,8 +342,6 @@ kolla_build_blocks:
         && grafana-cli plugins install grafana-opensearch-datasource
   ironic_inspector_header: |
     ADD additions-archive /
-  magnum_base_footer: |
-    RUN curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | head -n -1 | bash
 
 # Dict mapping image customization variable names to their values.
 # Each variable takes the form:

releasenotes/notes/update-magnum-containers-8814b1425ec45fc0.yaml

@@ -2,4 +2,5 @@
 fixes:
   - |
     Updates Magnum to a proper Caracal release version following critical bug
-    upstream merged & backported.
+    upstream merged & backported. Also, removes the pin for CAPI Helm driver
+    version and brings in the latest (1.2.0).