fix: bump pretty-format from 26.4.0 to 26.4.2 (#659)

Bumps [pretty-format](https://github.com/facebook/jest/tree/HEAD/packages/pretty-format) from 26.4.0 to 26.4.2.
- [Release notes](https://github.com/facebook/jest/releases)
- [Changelog](https://github.com/facebook/jest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/jest/commits/v26.4.2/packages/pretty-format)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -53,7 +53,7 @@
     "mozjpeg": "7.0.0",
     "p-queue": "6.6.1",
     "pngquant-bin": "5.0.2",
-    "pretty-format": "26.4.0",
+    "pretty-format": "26.4.2",
     "react-highlight-words": "0.16.0",
     "react-jss": "10.3.0",
     "react-syntax-highlighter": "13.5.0",