npm: bump ts-jest from 26.4.4 to 26.5.4

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 26.4.4 to 26.5.4.
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](kulshekhar/ts-jest@v26.4.4...v26.5.4)

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

package.json

@@ -92,7 +92,7 @@
         "pretty-quick": "^3.1.0",
         "randomcolor": "^0.5.4",
         "semantic-release": ">=17.2.3",
-        "ts-jest": "^26.4.4",
+        "ts-jest": "^26.5.4",
         "ts-node": ">=9.0.0",
         "typescript": "^4.1.3"
     },