Bump jest from 21.2.1 to 26.0.1

Bumps [jest](https://github.com/facebook/jest) from 21.2.1 to 26.0.1.
- [Release notes](https://github.com/facebook/jest/releases)
- [Changelog](https://github.com/facebook/jest/blob/master/CHANGELOG.md)
- [Commits](jestjs/jest@v21.2.1...v26.0.1)

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

Author: dependabot-preview[bot]

package.json

@@ -42,7 +42,7 @@
     "babel-plugin-transform-decorators-legacy": "^1.3.4",
     "babel-preset-env": "^1.6.1",
     "babel-preset-stage-0": "^6.24.1",
-    "jest": "^21.2.1",
+    "jest": "^26.0.1",
     "makeshift": "^1.1.0",
     "mobx": "^3.4.1",
     "rimraf": "^3.0.0",