build(deps-dev): bump @iconify-json/fa-solid in /frontend

Bumps [@iconify-json/fa-solid](https://github.com/iconify/icon-sets) from 1.1.8 to 1.2.1.
- [Commits](https://github.com/iconify/icon-sets/commits)

---
updated-dependencies:
- dependency-name: "@iconify-json/fa-solid"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -72,7 +72,7 @@
     "@iconify-json/entypo": "^1.2.0",
     "@iconify-json/fa": "^1.2.0",
     "@iconify-json/fa-regular": "^1.2.0",
-    "@iconify-json/fa-solid": "^1.1.8",
+    "@iconify-json/fa-solid": "^1.2.1",
     "@iconify-json/fa6-solid": "^1.2.1",
     "@iconify-json/fluent": "^1.1.59",
     "@iconify-json/mdi": "^1.2.2",