fix(yarn): support corepack constraint

[dmitriy-kudelko]

Changes

The PR introduces corepack version customization via constraints.coperpack configuration option.

Corepack has recently dropped support of Node.js 14. Some repos however still rely on older Node.js versions because of e.g. dependencies which are still incompatible with newer Node.js versions. This in turn makes impossible using renovate in such repos since it attempts installing latest corepack version by default and fails.

Context

#23389

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[viceice]

this needs to be added to lerna too

[dmitriy-kudelko]

this needs to be added to lerna too

This is where I may need a little help. I modified the code without covering with test for now, cause I'm not sure if just adding corepack to toolConstraints similarly to yarn would be sufficient.

Shall I request access to Slack channel do discuss this?

[renovate-release]

🎉 This PR is included in version 36.9.2 🎉

The release is available on:

• GitHub release
• 36.9.2

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