Update dependency jest to v26

Author: renovate-bot

package.json

@@ -45,7 +45,7 @@
     "fetch-mock": "^7.2.5",
     "generact": "^0.4.0",
     "husky": "^2.4.1",
-    "jest": "24.7.1",
+    "jest": "26.0.1",
     "jest-canvas-mock": "^2.0.0-alpha.2",
     "jest-serializer-html": "^7.0.0",
     "lint-staged": "^8.2.1",