Bump flag-icon-css from 3.5.0 to 4.1.5 (#4037)

Bumps [flag-icon-css](https://github.com/lipis/flag-icons) from 3.5.0 to 4.1.5.
- [Release notes](https://github.com/lipis/flag-icons/releases)
- [Commits](https://github.com/lipis/flag-icons/compare/3.5.0...v4.1.5)

---
updated-dependencies:
- dependency-name: flag-icon-css
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package-lock.json

@@ -5322,9 +5322,9 @@
       }
     },
     "flag-icon-css": {
-      "version": "3.5.0",
-      "resolved": "https://registry.npmjs.org/flag-icon-css/-/flag-icon-css-3.5.0.tgz",
-      "integrity": "sha512-pgJnJLrtb0tcDgU1fzGaQXmR8h++nXvILJ+r5SmOXaaL/2pocunQo2a8TAXhjQnBpRLPtZ1KCz/TYpqeNuE2ew=="
+      "version": "4.1.5",
+      "resolved": "https://registry.npmjs.org/flag-icon-css/-/flag-icon-css-4.1.5.tgz",
+      "integrity": "sha512-n79GW+Seau2sBgT6UF4njkAIVYktGxp133+MPvs92pbqycuFxikfpb8MOCCT0u5niybkHHVXVab19a9xNqxm0g=="
     },
     "flat-cache": {
       "version": "3.0.4",

package.json

@@ -97,7 +97,7 @@
     "ekko-lightbox": "^5.3.0",
     "fastclick": "^1.0.6",
     "filterizr": "^2.2.4",
-    "flag-icon-css": "^3.5.0",
+    "flag-icon-css": "^4.1.5",
     "flot": "^4.2.2",
     "fs-extra": "^9.1.0",
     "fullcalendar": "^5.10.1",