Bump jest from 26.2.2 to 26.4.2

Bumps [jest](https://github.com/facebook/jest) from 26.2.2 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/compare/v26.2.2...v26.4.2)

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

package.json

@@ -54,7 +54,7 @@
     "eslint-plugin-react": "^7.20.0",
     "file-loader": "^6.0.0",
     "html-webpack-plugin": "^4.3.0",
-    "jest": "^26.0.1",
+    "jest": "^26.4.2",
     "mini-css-extract-plugin": "^0.9.0",
     "node-sass": "^4.14.1",
     "prettier": "^2.0.5",