build(deps-dev): bump ts-jest from 26.5.1 to 26.5.4 in /shared/package

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 26.5.1 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@v26.5.1...v26.5.4)

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

shared/package/package.json

@@ -29,7 +29,7 @@
     "mini-css-extract-plugin": "^1.3.9",
     "prettier": "^2.2.1",
     "terser-webpack-plugin": "^5.1.1",
-    "ts-jest": "^26.5.1",
+    "ts-jest": "^26.5.4",
     "ts-loader": "^8.0.17",
     "typescript": "^4.1.5",
     "webpack": "^5.24.3",