[Security] Bump merge from 1.2.0 to 1.2.1 in /frontend

Bumps [merge](https://github.com/yeikos/js.merge) from 1.2.0 to 1.2.1. **This update includes security fixes.**
- [Release notes](https://github.com/yeikos/js.merge/releases)
- [Commits](swordev/merge@v1.2.0...v1.2.1)

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

Author: dependabot-support

frontend/yarn.lock

@@ -6371,9 +6371,9 @@ merge-descriptors@1.0.1:
   integrity sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E=
 
 merge@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/merge/-/merge-1.2.0.tgz#7531e39d4949c281a66b8c5a6e0265e8b05894da"
-  integrity sha1-dTHjnUlJwoGma4xabgJl6LBYlNo=
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/merge/-/merge-1.2.1.tgz#38bebf80c3220a8a487b6fcfb3941bb11720c145"
+  integrity sha512-VjFo4P5Whtj4vsLzsYBu5ayHhoHJ0UqNm7ibvShmbmoz7tGi0vXaoJbGdB+GmDMLUdg8DpQXEIeVDAe8MaABvQ==
 
 methods@~1.1.2:
   version "1.1.2"