Bump sharp, gatsby-plugin-manifest, gatsby-plugin-sharp and gatsby-transformer-sharp#31

dependabot[bot] wants to merge 1 commit intodevpwener/pwener.github.io:devfrom

dependabot/npm_and_yarn/sharp-and-gatsby-plugin-manifest-and-gatsby-plugin-sharp-and-gatsby-transformer-sharp-0.31.3pwener/pwener.github.io:dependabot/npm_and_yarn/sharp-and-gatsby-plugin-manifest-and-gatsby-plugin-sharp-and-gatsby-transformer-sharp-0.31.3Copy head branch name to clipboard