chore(deps): update gatsby monorepo

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
babel-preset-gatsby	devDependencies	patch	0.3.3 -> 0.3.6
gatsby (changelog)	dependencies	patch	2.20.25 -> 2.20.33
gatsby-image	dependencies	patch	2.3.4 -> 2.3.5
gatsby-plugin-canonical-urls	dependencies	patch	2.2.3 -> 2.2.4
gatsby-plugin-layout	dependencies	patch	1.2.3 -> 1.2.4
gatsby-plugin-manifest	dependencies	patch	2.3.5 -> 2.3.7
gatsby-plugin-offline	dependencies	patch	3.1.4 -> 3.1.5
gatsby-plugin-react-helmet	dependencies	patch	3.2.4 -> 3.2.5
gatsby-plugin-sharp	dependencies	patch	2.5.6 -> 2.5.7
gatsby-source-filesystem	dependencies	patch	2.2.4 -> 2.2.5
gatsby-transformer-sharp	dependencies	patch	2.4.6 -> 2.4.7

---

Release Notes

gatsbyjs/gatsby

### [`v0.3.6`](https://togithub.com/gatsbyjs/gatsby/compare/35154266b55896fb6bf678d8b0ac61e8470dcbf5...c67221403d005b0e580868937476abdc7378d243) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/35154266b55896fb6bf678d8b0ac61e8470dcbf5...c67221403d005b0e580868937476abdc7378d243) ### [`v0.3.5`](https://togithub.com/gatsbyjs/gatsby/compare/12eaaa0a6ff1e365a776f24ead7a8759cc97a926...35154266b55896fb6bf678d8b0ac61e8470dcbf5) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/12eaaa0a6ff1e365a776f24ead7a8759cc97a926...35154266b55896fb6bf678d8b0ac61e8470dcbf5) ### [`v0.3.4`](https://togithub.com/gatsbyjs/gatsby/compare/8b6b9f338b6d695a30c80ead459c3a9ca2f165e3...35154266b55896fb6bf678d8b0ac61e8470dcbf5) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/8b6b9f338b6d695a30c80ead459c3a9ca2f165e3...12eaaa0a6ff1e365a776f24ead7a8759cc97a926)

---

Renovate configuration

:date: Schedule: "every weekend" (UTC).

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:ghost: Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by WhiteSource Renovate. View repository job log here.

[netlify[bot]]

Preview deployed with success. Look for the URL in Details.

Built with commit eee3e2c0ac522622e4f41909c8d0f1bd952877c2

https://deploy-preview-160--multei.netlify.app

[codecov[bot]]

Codecov Report

Merging #160 into master will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #160   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines            8         8           
=========================================
  Hits             8         8           

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 1d309f3...eee3e2c. Read the comment docs.