Bump minimist, mkdirp and potrace#6

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dependabot/npm_and_yarn/minimist-and-minimist-and-mkdirp-and-potrace-1.2.8riraseth-gatsby-stuff/backroads:dependabot/npm_and_yarn/minimist-and-minimist-and-mkdirp-and-potrace-1.2.8Copy head branch name to clipboard