chore(deps): bump immutable from 5.0.2 to 5.1.5 in /docs-site

Bumps [immutable](https://github.com/immutable-js/immutable-js) from 5.0.2 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](immutable-js/immutable-js@v5.0.2...v5.1.5)

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

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

Author: dependabot[bot]

docs-site/yarn.lock

@@ -3470,9 +3470,9 @@ __metadata:
   linkType: hard
 
 "immutable@npm:^5.0.2":
-  version: 5.0.2
-  resolution: "immutable@npm:5.0.2"
-  checksum: 10c0/0d97ad95384e49563b6ed68f90e5ea83c149fd96ff417fae8274e1c524e3ef800eb1a2e8009e29d9b8ffdf63affd7692f87c8af72714181aad8dca88747fb5ac
+  version: 5.1.5
+  resolution: "immutable@npm:5.1.5"
+  checksum: 10c0/8017ece1578e3c5939ba3305176aee059def1b8a90c7fa2a347ef583ebbd38cbe77ce1bbd786a5fab57e2da00bbcb0493b92e4332cdc4e1fe5cfb09a4688df31
   languageName: node
   linkType: hard