chore(deps): update gatsby monorepo

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
babel-preset-gatsby	devDependencies	patch	0.4.8 -> 0.4.9
gatsby (changelog)	dependencies	patch	2.23.1 -> 2.23.3
gatsby-image	dependencies	patch	2.4.6 -> 2.4.7
gatsby-plugin-canonical-urls	dependencies	patch	2.3.3 -> 2.3.4
gatsby-plugin-layout	dependencies	patch	1.3.3 -> 1.3.4
gatsby-plugin-manifest	dependencies	patch	2.4.10 -> 2.4.11
gatsby-plugin-offline	dependencies	patch	3.2.8 -> 3.2.9
gatsby-plugin-react-helmet	dependencies	patch	3.3.3 -> 3.3.4
gatsby-plugin-sharp	dependencies	patch	2.6.10 -> 2.6.11
gatsby-plugin-sitemap	dependencies	patch	2.4.4 -> 2.4.5
gatsby-source-filesystem	dependencies	patch	2.3.10 -> 2.3.11
gatsby-transformer-sharp	dependencies	patch	2.5.4 -> 2.5.5

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Release Notes

gatsbyjs/gatsby

### [`v0.4.9`](https://togithub.com/gatsbyjs/gatsby/compare/75f059efb1135362845bb347d2778cacfeb1454b...221481bef7733c9957fb9ba83178f08280243b81) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/75f059efb1135362845bb347d2778cacfeb1454b...221481bef7733c9957fb9ba83178f08280243b81)

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Codecov Report

Merging #244 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #244   +/-   ##
=======================================
  Coverage   50.41%   50.41%           
=======================================
  Files          49       49           
  Lines         361      361           
  Branches       40       40           
=======================================
  Hits          182      182           
  Misses        149      149           
  Partials       30       30           

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