Update actions/checkout action to v3 (#295)
Update actions/checkout action to v3 (#295)

Co-authored-by: renovate[bot] <a121db9f22d798f50c14d9cf83c8e131bf2ac742@users.noreply.github.com>
googleworkspace/apps-script-samples,gsuitedevs/apps-script-samples,googleworkspace/apps-script-samples,gsuitedevs/apps-script-samples