chore: upgrade deps

Author: kazupon

package.json

@@ -27,11 +27,11 @@
     "@babel/parser": "^7.9.6"
   },
   "devDependencies": {
-    "@vue/server-test-utils": "^1.0.0-beta.29",
-    "@vue/test-utils": "^1.0.0-beta.29",
+    "@vue/server-test-utils": "^1.0.2",
+    "@vue/test-utils": "^1.0.2",
     "babel-eslint": "^10.0.0",
-    "eslint": "^4.19.1",
-    "eslint-plugin-vue": "^4.7.1",
+    "eslint": "^6.8.0",
+    "eslint-plugin-vue": "^6.2.2",
     "jest": "^26.0.0",
     "jest-serializer-vue": "^2.0.2",
     "lerna-changelog": "^1.0.0",