Update helm base to newest CI docker image

helpers/helm_base.yaml

 .helm_based_job:
   extends: .docker_based_job
-  image: gitlab.ssec.wisc.edu:5555/cspp_geo/geosphere/gcloud-kubectl-helm/gcloud-kubectl-helm:f850fd5c
+  image: gitlab.ssec.wisc.edu:5555/cspp_geo/geosphere/gcloud-kubectl-helm/gcloud-kubectl-helm:0025dfb0
   before_script:
     # Write environment variable changes to a separate file that can be sourced in "after_script"
     # We can't move this to a separate script as it won't be importable from other repositories