fix(deps): update dependency gatsby to v2.27.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gatsby (changelog)	2.26.1 -> 2.27.0

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Release Notes

gatsbyjs/gatsby

v2.27.0

Compare Source

Welcome to gatsby@2.27.0 release (November 2020 #2).

Key highlights of this release:

• create-gatsby - new, interactive way to create a Gatsby site
• Experimental: Queries on Demand - improves gatsby develop bootup time
• Experimental: Lazy page bundling - also improves gatsby develop bootup time
• Experimental: SSR in develop - catch SSR errors early
• gatsby-plugin-mdx@1.5.0 - new option for better performance
• Notable bugfixes

Sneak peek to next releases:

• Experimental: Lazy images in develop
• Documentation Reorganization

Bleeding Edge: Want to try new features as soon as possible? Install gatsby@next and let us know
if you have any issues.

Previous release notes
Full changelog

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