fix(deps): update dependency @keystone-6/core to v6.1.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@keystone-6/core (source)	6.0.0 -> 6.1.0

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Release Notes

keystonejs/keystone (@​keystone-6/core)

### [`v6.1.0`](https://togithub.com/keystonejs/keystone/compare/@keystone-6/core@6.0.0...@keystone-6/core@6.1.0) [Compare Source](https://togithub.com/keystonejs/keystone/compare/@keystone-6/core@6.0.0...@keystone-6/core@6.1.0)

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