chore(gatsby-image): Add `jest-matchmedia-mock` to replace DIY mock#26118

Merged

pvdz merged 1 commit intogatsbyjs:masterfrom polarathene:chore/replace-diy-matchmedia-mock

Jul 30, 2020

+17-13

Commits on Jul 30, 2020

chore: Add jest-matchmedia-mock to replace DIY mock
polarathene
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