Update jest

Author: adamwathan

package.json

@@ -44,7 +44,7 @@
     "eslint-config-postcss": "^2.0.2",
     "eslint-config-prettier": "^6.0.0",
     "eslint-plugin-prettier": "^3.0.1",
-    "jest": "^25.1.0",
+    "jest": "^26.5.3",
     "prettier": "^1.7.4",
     "rimraf": "^3.0.0"
   },