Update orb version in the example snippet

[zmarkan]

Checklist

• [ ] All new jobs, commands, executors, parameters have descriptions
• [ x] Examples have been added for any significant new features
• [ ] README has been updated, if necessary

Motivation, issues

The example had an out of date orb version. Updated to use the latest. One community member on Twitter pointed it out https://github.com/CircleCI-Public/gcp-cli-orb/pull/47

Description

[ferreiro]

Thanks for doing this! ❤️