chore: add gcf-owl-bot to list of trusted contributors (#1208)#1301

gcf-merge-on-green[bot] merged 1 commit intomastergoogleapis/java-bigquerystorage:masterfrom

owl-bot-update-lock-78ad73bf327217e14460c3a3adbba3e1d9a4b5f35fe85103421ba784fd27529fgoogleapis/java-bigquerystorage:owl-bot-update-lock-78ad73bf327217e14460c3a3adbba3e1d9a4b5f35fe85103421ba784fd27529fCopy head branch name to clipboard