Update dependency eslint-plugin-vue to v8 (#99)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -64,7 +64,7 @@
         "eslint-plugin-prettier": "^4.0.0",
         "eslint-plugin-regexp": "^1.0.0",
         "eslint-plugin-svelte3": "^3.2.0",
-        "eslint-plugin-vue": "^7.2.0",
+        "eslint-plugin-vue": "^8.0.0",
         "estree-walker": "^3.0.0",
         "locate-character": "^2.0.5",
         "magic-string": "^0.25.7",