Update dependency eslint-plugin-vue to v8 (#62)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -81,7 +81,7 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^4.0.0",
     "eslint-plugin-regexp": "^1.0.0",
-    "eslint-plugin-vue": "^7.9.0",
+    "eslint-plugin-vue": "^8.0.0",
     "eslint-plugin-yml": "^0.10.0",
     "eslint4b": "^7.25.0",
     "estree-walker": "^3.0.0",