chore(deps): Bump immutable from 5.1.5 to 5.1.9 in /web

Bumps [immutable](https://github.com/immutable-js/immutable-js) from 5.1.5 to 5.1.9.
- [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/v5.1.5...v5.1.9)

---
updated-dependencies:
- dependency-name: immutable
  dependency-version: 5.1.9
  dependency-type: indirect
...

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

web/package-lock.json

@@ -3115,9 +3115,9 @@
             "license": "MIT"
         },
         "node_modules/immutable": {
-            "version": "5.1.5",
-            "resolved": "https://registry.npmjs.org/immutable/-/immutable-5.1.5.tgz",
-            "integrity": "sha512-t7xcm2siw+hlUM68I+UEOK+z84RzmN59as9DZ7P1l0994DKUWV7UXBMQZVxaoMSRQ+PBZbHCOoBt7a2wxOMt+A==",
+            "version": "5.1.9",
+            "resolved": "https://registry.npmjs.org/immutable/-/immutable-5.1.9.tgz",
+            "integrity": "sha512-m8nVez3rwrgmWxtLMt1ZYXB2Lv7OKYn/disyxAlSDYAlKSlFoPPfIAmAM/M5xqL4m4C/wAPw7S2/CNaUii1Hxg==",
             "dev": true,
             "license": "MIT"
         },