v1.34.0

• #323 switch CI from travis to github actions - @hilary
• #322 update CONTRIBUTING - @hilary
• #320 Add VPC v3 attributes - @viola

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Note: This release contains functionality for our VPC product that is in limited availability. If you are not a member of the limited availability group for this feature, you will not be able to use it until it reaches general availability. Please watch the official DigitalOcean changelog to see when this feature reaches general availability.