[release-3.3] Add 1.28.5-redhat and 1.27.8-redhat helm charts + update placeholders for next releases and GA ones#726#729

openshift-merge-bot[bot] merged 2 commits intoopenshift-service-mesh:release-3.3openshift-service-mesh/sail-operator:release-3.3from

mkralik3:add_1278_1285_rh_helmmkralik3/sail-operator:add_1278_1285_rh_helmCopy head branch name to clipboard