fix(deps): update module github.com/kubewarden/policy-sdk-go to v0.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/kubewarden/policy-sdk-go	require	minor	v0.3.0 -> v0.4.0

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Release Notes

kubewarden/policy-sdk-go

### [`v0.4.0`](https://togithub.com/kubewarden/policy-sdk-go/compare/v0.3.0...v0.4.0) [Compare Source](https://togithub.com/kubewarden/policy-sdk-go/compare/v0.3.0...v0.4.0)

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