chore(deps-dev): bump ts-jest from 26.5.5 to 26.5.6

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 26.5.5 to 26.5.6.
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](kulshekhar/ts-jest@v26.5.5...v26.5.6)

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

package.json

@@ -59,7 +59,7 @@
     "prettier": "^2.3.0",
     "raw-loader": "^4.0.2",
     "standard-version": "^9.3.0",
-    "ts-jest": "^26.5.4",
+    "ts-jest": "^26.5.6",
     "typescript": "^4.2.4"
   }
 }