Updated package

Author: estruyf

package.json

@@ -50,7 +50,7 @@
     "@microsoft/sp-webpart-workbench": "1.12.0",
     "@types/chart.js": "2.7.40",
     "@types/enzyme": "2.8.7",
-    "@types/jest": "^25.2.3",
+    "@types/jest": "25.2.3",
     "@types/lodash": "4.14.149",
     "@types/react": "16.9.36",
     "@types/react-addons-shallow-compare": "0.14.17",