Upgrade actions/github-script from v3 to v6 to resolve Node.js 12
and `set-output` command warnings.
Upgrade google-github-actions/upload-cloud-storage from v0.8.0 to
v0.10.4 to resolve `set-output` command warnings.
Upgrade actions/checkout from v2 to v3 to resolve Node.js 12 warnings.
Remove references to `set-output` command from workflow.
Signed-off-by: Austin Vazquez <macedonv@amazon.com>
8c035d3873