chore(deps): update dependency vuex to v3.4.0

Author: renovate-bot

package-lock.json

@@ -59,7 +59,7 @@
     "vue-loader": "15.9.2",
     "vue-router": "3.1.6",
     "vue-template-compiler": "2.6.11",
-    "vuex": "3.3.0",
+    "vuex": "3.4.0",
     "webpack": "4.43.0",
     "webpack-cli": "3.3.11",
     "webpack-dev-middleware": "3.7.2",