Revert to jest 25.5.4

Incompatibility with ts-jest

Author: openscript

package.json

@@ -38,7 +38,7 @@
     "eslint-config-prettier": "^6.11.0",
     "eslint-plugin-prettier": "^3.1.3",
     "eslint-plugin-react": "^7.19.0",
-    "jest": "^26.0.1",
+    "jest": "^25.5.4",
     "prettier": "^2.0.5",
     "react-is": "^16.13.1",
     "react-test-renderer": "^16.13.1",