deps: bump ts-jest from 25.2.0 to 25.2.1

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 25.2.0 to 25.2.1.
- [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/commits)

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

package.json

@@ -73,7 +73,7 @@
     "nock": "^12.0.0",
     "prettier": "1.19.1",
     "standard-version": "^7.1.0",
-    "ts-jest": "^25.2.0",
+    "ts-jest": "^25.2.1",
     "typescript": "^3.7.5"
   }
 }