Bump vue from 2.6.11 to 2.6.12 in /app

Bumps [vue](https://github.com/vuejs/vue) from 2.6.11 to 2.6.12.
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](https://github.com/vuejs/vue/compare/v2.6.11...v2.6.12)

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

app/package.json

@@ -66,7 +66,7 @@
         "sumchecker": "^3.0.1",
         "sweetalert2": "^9.17.0",
         "system-font-families": "^0.4.1",
-        "vue": "^2.6.11"
+        "vue": "^2.6.12"
     },
     "optionalDependencies": {
         "itunes-nowplaying-mac": "0.3.1"

app/yarn.lock

@@ -3462,10 +3462,10 @@ verror@1.10.0:
     core-util-is "1.0.2"
     extsprintf "^1.2.0"
 
-vue@^2.6.11:
-  version "2.6.11"
-  resolved "https://registry.yarnpkg.com/vue/-/vue-2.6.11.tgz#76594d877d4b12234406e84e35275c6d514125c5"
-  integrity sha512-VfPwgcGABbGAue9+sfrD4PuwFar7gPb1yl1UK1MwXoQPAw0BKSqWfoYCT/ThFrdEVWoI51dBuyCoiNU9bZDZxQ==
+vue@^2.6.12:
+  version "2.6.12"
+  resolved "https://registry.yarnpkg.com/vue/-/vue-2.6.12.tgz#f5ebd4fa6bd2869403e29a896aed4904456c9123"
+  integrity sha512-uhmLFETqPPNyuLLbsKz6ioJ4q7AZHzD8ZVFNATNyICSZouqP2Sz0rotWQC8UNBF6VGSCs5abnKJoStA6JbCbfg==
 
 wcwidth@^1.0.1:
   version "1.0.1"