fix(deps): update minor and patch for gatsby-transformer-sharp

[wardpeet]

This PR contains the following updates:

Package	Type	Update	Change
sharp	dependencies	minor	^0.25.4 -> ^0.26.1

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Release Notes

lovell/sharp

### [`v0.26.1`](https://togithub.com/lovell/sharp/compare/v0.26.0...v0.26.1) [Compare Source](https://togithub.com/lovell/sharp/compare/v0.26.0...v0.26.1) ### [`v0.26.0`](https://togithub.com/lovell/sharp/compare/v0.25.4...v0.26.0) [Compare Source](https://togithub.com/lovell/sharp/compare/v0.25.4...v0.26.0)

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