fix(deps): update dependency @nuxt/config to ^2.18.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@nuxt/config (source)	^2.17.4 -> ^2.18.1

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Release Notes

nuxt/nuxt (@​nuxt/config)

v2.18.1

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👉 Changelog

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🩹 Fixes

• webpack: Depend on earlier version of mkdirp (f67056b9e)

❤️ Contributors

• Daniel Roe (@​danielroe)

v2.18.0

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👉 Changelog

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🚀 Enhancements

• webpack: Migrate to memfs (#​27652)

🩹 Fixes

• vue-app: Don't throw if we can't read sessionStorage (#​27662)
• config: Add back md4 monkey-patch for wider ecosystem (#​27865)

🏡 Chore

• Bump internal versions (9e829b59a)
• Add non-applicable advisory GHSA-3h5v-q93c-6h6q (5ef7311f0)

❤️ Contributors

• Daniel Roe (@​danielroe)

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