Bump vuex from 3.1.2 to 3.1.3 (#300)

Bumps [vuex](https://github.com/vuejs/vuex) from 3.1.2 to 3.1.3.
- [Release notes](https://github.com/vuejs/vuex/releases)
- [Commits](https://github.com/vuejs/vuex/compare/v3.1.2...v3.1.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -36,7 +36,7 @@
   "vue": "^2.6.11",
   "vue-meta": "^2.3.3",
   "vue-router": "^3.1.6",
-  "vuex": "^3.1.2"
+  "vuex": "^3.1.3"
  },
  "devDependencies": {
   "@babel/core": "^7.8.7",