fix: upgrade flag-icons from 6.6.6 to 6.7.0

Snyk has created this PR to upgrade flag-icons from 6.6.6 to 6.7.0.

See this package in npm:
https://www.npmjs.com/package/flag-icons

See this project in Snyk:
https://app.snyk.io/org/dawoudio/project/e27b08aa-e5d2-4b10-8303-630a69d0b669?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -78,7 +78,7 @@
         "chart.js": "^2.9.4",
         "ckeditor": "^4.12.1",
         "daterangepicker": "^3.1.0",
-        "flag-icons": "^6.6.6",
+        "flag-icons": "^6.7.0",
         "fullcalendar": "3.10.5",
         "i18n": "^0.15.1",
         "i18next": "19.9.2",