Bump vuex from 3.1.1 to 3.1.2

Bumps [vuex](https://github.com/vuejs/vuex) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/vuejs/vuex/releases)
- [Commits](vuejs/vuex@v3.1.1...v3.1.2)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -22,7 +22,7 @@
     "nextcloud-axios": "^0.2.1",
     "nextcloud-server": "^0.15.10",
     "vue": "^2.6.10",
-    "vuex": "^3.1.1"
+    "vuex": "^3.1.2"
   },
   "devDependencies": {
     "@babel/core": "^7.7.2",