chore: update gatsby monorepo

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
gatsby	devDependencies	patch	^2.13.74 -> ^2.13.76
gatsby	dependencies	patch	^2.13.74 -> ^2.13.76
gatsby-image	dependencies	patch	^2.2.10 -> ^2.2.12
gatsby-plugin-google-analytics	dependencies	patch	^2.1.8 -> ^2.1.9
gatsby-plugin-manifest	dependencies	patch	^2.2.7 -> ^2.2.8
gatsby-plugin-mdx	dependencies	patch	^1.0.26 -> ^1.0.28
gatsby-plugin-offline	dependencies	patch	^2.2.8 -> ^2.2.9
gatsby-plugin-sharp	dependencies	patch	^2.2.14 -> ^2.2.16
gatsby-remark-copy-linked-files	dependencies	patch	^2.1.8 -> ^2.1.9
gatsby-remark-images	dependencies	patch	^3.1.14 -> ^3.1.16
gatsby-remark-prismjs	dependencies	patch	^3.3.6 -> ^3.3.8
gatsby-remark-responsive-iframe	dependencies	patch	^2.2.6 -> ^2.2.7
gatsby-remark-smartypants	dependencies	patch	^2.1.3 -> ^2.1.4
gatsby-source-filesystem	dependencies	patch	^2.1.12 -> ^2.1.14
gatsby-transformer-remark	dependencies	patch	^2.6.16 -> ^2.6.18
gatsby-transformer-sharp	dependencies	patch	^2.2.8 -> ^2.2.10

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Release Notes

gatsbyjs/gatsby

v2.13.76

Compare Source

v2.13.75

Compare Source

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[sidharthachatterjee]

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