chore(deps): update devdependency standard-version to v8 [security]

Author: renovate[bot]

package.json

@@ -78,7 +78,7 @@
     "jest": "^23.6.0",
     "jsdom": "^13.0.0",
     "nuxt-edge": "^2.3.0-25706271.cca799c",
-    "standard-version": "^4.4.0",
+    "standard-version": "^8.0.0",
     "webpack-defaults": "^3.0.0"
   },
   "resolutions": {