build(deps-dev): bump ts-jest from 25.3.1 to 25.4.0

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 25.3.1 to 25.4.0.
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](kulshekhar/ts-jest@v25.3.1...v25.4.0)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -60,7 +60,7 @@
     "jest-helpers": "3.1.1",
     "rimraf": "3.0.2",
     "standard-version": "7.1.0",
-    "ts-jest": "25.3.1",
+    "ts-jest": "25.4.0",
     "ts-loader": "6.2.2",
     "ts-node": "8.8.2",
     "tslint": "6.1.1",