[updatecli] Bump elastic stack version to 9.3.0-d6db763e#20144

elastic-observability-automation[bot] wants to merge 2 commits into9.3elastic/apm-server:9.3from

updatecli_9.3_updatecli-bump-elastic-stack-snapshot-9.3elastic/apm-server:updatecli_9.3_updatecli-bump-elastic-stack-snapshot-9.3Copy head branch name to clipboard