pulumi-kubernetes dependency pinning on PyYAML is incompatibe with pulumi dependencies

[arni-inaba]

Hello!

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Issue details

The PyYAML pinning for pulumi and pulumi-kubernetes broke today when PyYAML 6.0 was released.

pulumi asks for pyyaml>=5.3.1

pulumi-kubernetes requires pyyaml<6.0,>=5.3.1

Steps to reproduce

1. pip install recent version of pulumi
2. pip install recent version of pulumi-kubernetes
3. observe the error:

pulumi-kubernetes 3.5.0 requires pyyaml<6.0,>=5.3.1, but you'll have pyyaml 6.0 which is incompatible.

Expected: I expected pulumi-kubernetes to be installed
Actual: An error

Workaround: Explicitly specify a PyYAML version in your requirements, e.g. PyYAML==5.4.1

[eirikur-grid]

I think there's a perfect opportunity for test automation here. Not being able to pip install a typical combination of pulumi packages leads to user frustration.