Bump dev chart version.

Signed-off-by: Michael Nelson <minelson@vmware.com>

Author: absoludity

chart/kubeapps/Chart.yaml

@@ -35,4 +35,4 @@ maintainers:
 name: kubeapps
 sources:
   - https://github.com/bitnami/charts/tree/main/bitnami/kubeapps
-version: 12.4.5
+version: 12.4.6-dev0