fix(deps): update dependency yaml to ^2.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
yaml (source)	^2.5.1 -> ^2.6.0

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Release Notes

eemeli/yaml (yaml)

### [`v2.6.0`](https://redirect.github.com/eemeli/yaml/releases/tag/v2.6.0) [Compare Source](https://redirect.github.com/eemeli/yaml/compare/v2.5.1...v2.6.0) - Use a proper tag for `!!merge <<` keys ([#​580](https://redirect.github.com/eemeli/yaml/issues/580)) - Add `stringKeys` parse option ([#​581](https://redirect.github.com/eemeli/yaml/issues/581)) - Stringify a Document as a Document ([#​576](https://redirect.github.com/eemeli/yaml/issues/576)) - Add sponsorship by [Manifest](https://manifest.build/)

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