Add gp3 ebs type

[spockNinja]

Summary

Add gp3 as an EBS volume type.

We are currently receiving an error: ERROR - unknown volume type 'gp3' for volume ...

AWS docs show these as two separate limits. Luckily, the limits appear to behave the same as the gp2 limits.

Pull Request Checklist

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[spockNinja]

@jantman I think I have this one cleaned up and ready for review now. ☺️

[spockNinja]

@jantman This is triggering a recurring error in our limit monitoring solution. Does it need anything else before it can be merged?

[sean-zou]

Getting tons of unknown volume type 'gp3'. Please review and merge this. Thanks!

[jantman]

This has been released in 11.0.0, which is now live on PyPI. Thank you so much, and apologies for the delay.

[spockNinja]

Thank YOU, @jantman, for giving your energy to this project. 🙇🏼