fix: upgrade vue-i18n from 8.22.2 to 8.28.2

Snyk has created this PR to upgrade vue-i18n from 8.22.2 to 8.28.2.

See this package in npm:
https://www.npmjs.com/package/vue-i18n

See this project in Snyk:
https://app.snyk.io/org/swadhinbiswas/project/c1bd4019-564f-4a70-b38f-b99d91c469a9?utm_source=github&utm_medium=referral&page=upgrade-pr

etc/quiz-app/package.json

@@ -10,7 +10,7 @@
   "dependencies": {
     "core-js": "^3.6.5",
     "vue": "^2.6.11",
-    "vue-i18n": "^8.22.2",
+    "vue-i18n": "^8.28.2",
     "vue-router": "^3.4.9"
   },
   "devDependencies": {