Pin dependency ts-jest to 28.0.2

Author: renovate-bot

package.json

@@ -45,7 +45,7 @@
     "cross-env": "7.0.3",
     "jest": "28.1.0",
     "prettier": "2.6.2",
-    "ts-jest": "^28.0.2",
+    "ts-jest": "28.0.2",
     "tsup": "5.12.7",
     "typescript": "4.6.4"
   }