chore(deps): bump immutable from 5.1.4 to 5.1.5 in /docs

Bumps [immutable](https://github.com/immutable-js/immutable-js) from 5.1.4 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/v5.1.4...v5.1.5)

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

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

docs/yarn.lock

@@ -6139,9 +6139,9 @@ image-size@^2.0.2:
   integrity sha512-IRqXKlaXwgSMAMtpNzZa1ZAe8m+Sa1770Dhk8VkSsP9LS+iHD62Zd8FQKs8fbPiagBE7BzoFX23cxFnwshpV6w==
 
 immutable@^5.0.2:
-  version "5.1.4"
-  resolved "https://registry.yarnpkg.com/immutable/-/immutable-5.1.4.tgz#e3f8c1fe7b567d56cf26698f31918c241dae8c1f"
-  integrity sha512-p6u1bG3YSnINT5RQmx/yRZBpenIl30kVxkTLDyHLIMk0gict704Q9n+thfDI7lTRm9vXdDYutVzXhzcThxTnXA==
+  version "5.1.5"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-5.1.5.tgz#93ee4db5c2a9ab42a4a783069f3c5d8847d40165"
+  integrity sha512-t7xcm2siw+hlUM68I+UEOK+z84RzmN59as9DZ7P1l0994DKUWV7UXBMQZVxaoMSRQ+PBZbHCOoBt7a2wxOMt+A==
 
 import-fresh@^3.3.0:
   version "3.3.1"