chore(deps): update devdependency jest to v26

Author: renovate-bot

package.json

@@ -75,7 +75,7 @@
     "eslint-plugin-standard": "^4.0.0",
     "eslint-plugin-vue": "^5.0.0",
     "husky": "^1.2.0",
-    "jest": "^23.6.0",
+    "jest": "^26.0.1",
     "jsdom": "^13.0.0",
     "nuxt-edge": "^2.3.0-25706271.cca799c",
     "standard-version": "^4.4.0",