build(deps-dev): bump jest from 26.2.2 to 26.4.0

Bumps [jest](https://github.com/facebook/jest) from 26.2.2 to 26.4.0.
- [Release notes](https://github.com/facebook/jest/releases)
- [Changelog](https://github.com/facebook/jest/blob/master/CHANGELOG.md)
- [Commits](jestjs/jest@v26.2.2...v26.4.0)

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

Author: dependabot-preview[bot]

package.json

@@ -88,7 +88,7 @@
     "dotenv": "^8.2.0",
     "faked-promise": "^2.2.2",
     "html-webpack-plugin": "^4.3.0",
-    "jest": "^26.2.2",
+    "jest": "^26.4.0",
     "jest-mock-warn": "^1.1.0",
     "lint-staged": "^10.2.11",
     "nightwatch": "^1.3.7",