Bump jest and ts-jest

Bumps [jest](https://github.com/facebook/jest) and [ts-jest](https://github.com/kulshekhar/ts-jest). These dependencies needed to be updated together.

Updates `jest` from 24.9.0 to 25.1.0
- [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/v24.9.0...v25.1.0)

Updates `ts-jest` from 24.3.0 to 25.0.0
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kulshekhar/ts-jest/compare/v24.3.0...v25.0.0)

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

package.json

@@ -25,14 +25,14 @@
     "cleanslate": "^0.10.1",
     "copy-webpack-plugin": "^5.1.1",
     "geckodriver": "^1.19.1",
-    "jest": "^24.9.0",
+    "jest": "^25.1.0",
     "marked": "^0.8.0",
     "nearley": "^2.19.1",
     "prettier": "^1.19.1",
     "selenium-webdriver": "^4.0.0-alpha.5",
     "shared-git-hooks": "^1.2.1",
     "source-map-loader": "^0.2.4",
-    "ts-jest": "^24.3.0",
+    "ts-jest": "^25.0.0",
     "ts-loader": "^6.2.1",
     "ts-node": "^8.6.2",
     "tsconfig-paths-webpack-plugin": "^3.2.0",