build(deps): bump immutable from 5.1.3 to 5.1.5 in /frontend

Bumps [immutable](https://github.com/immutable-js/immutable-js) from 5.1.3 to 5.1.5.
- [Release notes](https://github.com/immutable-js/immutable-js/releases)
- [Changelog](https://github.com/immutable-js/immutable-js/blob/main/CHANGELOG.md)
- [Commits](https://github.com/immutable-js/immutable-js/compare/v5.1.3...v5.1.5)

---
updated-dependencies:
- dependency-name: immutable
  dependency-version: 5.1.5
  dependency-type: indirect
...

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

frontend/package-lock.json

@@ -1972,7 +1972,9 @@
       }
     },
     "node_modules/immutable": {
-      "version": "5.1.3",
+      "version": "5.1.5",
+      "resolved": "https://registry.npmjs.org/immutable/-/immutable-5.1.5.tgz",
+      "integrity": "sha512-t7xcm2siw+hlUM68I+UEOK+z84RzmN59as9DZ7P1l0994DKUWV7UXBMQZVxaoMSRQ+PBZbHCOoBt7a2wxOMt+A==",
       "license": "MIT"
     },
     "node_modules/is-extglob": {