Update dependency jest to v26

Author: renovate-bot

package.json

@@ -61,7 +61,7 @@
     "eslint-config-bliss": "^4.7.0",
     "flow-bin": "^0.125.1",
     "flow-typed": "^3.2.1",
-    "jest": "^25.5.4"
+    "jest": "^26.6.0"
   },
   "eslintConfig": {
     "extends": "bliss"