fix(deps): update gatsby monorepo (minor)

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gatsby (changelog)	2.26.1 -> 2.27.3
gatsby-link	2.5.0 -> 2.6.0
gatsby-plugin-emotion	4.4.0 -> 4.5.0
gatsby-plugin-layout	1.4.0 -> 1.5.0
gatsby-plugin-mdx	1.4.0 -> 1.5.0
gatsby-plugin-react-helmet	3.4.0 -> 3.5.0
gatsby-plugin-remove-trailing-slashes	2.4.0 -> 2.5.0
gatsby-plugin-sharp	2.8.0 -> 2.9.0
gatsby-plugin-sitemap	2.6.0 -> 2.7.0
gatsby-plugin-styled-components	3.4.0 -> 3.5.0
gatsby-remark-copy-linked-files	2.4.0 -> 2.5.0
gatsby-remark-images	3.5.1 -> 3.6.0
gatsby-source-filesystem	2.5.0 -> 2.6.1
gatsby-transformer-remark	2.10.0 -> 2.11.1

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Release Notes

gatsbyjs/gatsby

v2.27.3

Compare Source

v2.27.2

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v2.27.1

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v2.27.0

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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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