docs: add note on loki monolith testing and update helm upgrade command
General MR
Summary
Add a note to avoid unnecessary testing of loki monolith and update the helm upgrade command used to deploy loki as a part of bigbang.
UNCLASSIFIED - NO CUI
Iron Bank will be replacing the old container signing certificate with the new container signing certificate. No additional action is required. Users can find additional information regarding the certificate rotation and container signature verification here and here.
Currently supported Big Bang Version is 2.35
UNCLASSIFIED - NO CUI