Bump ts-jest from 26.5.3 to 26.5.4

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 26.5.3 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@v26.5.3...v26.5.4)

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

Author: dependabot[bot]

package-lock.json

@@ -36,7 +36,7 @@
     "jest": "^26.6.3",
     "lint-staged": "^10.5.4",
     "prettier-standard": "16.3.0",
-    "ts-jest": "^26.5.3",
+    "ts-jest": "^26.5.4",
     "ts-node": "^9.1.1",
     "typescript": "^4.2.3"
   },