Bump immutable from 3.8.2 to 4.3.7

Bumps [immutable](https://github.com/immutable-js/immutable-js) from 3.8.2 to 4.3.7.
- [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@v3.8.2...v4.3.7)

---
updated-dependencies:
- dependency-name: immutable
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -44,7 +44,7 @@
     "flux": "4.x",
     "glossary-panel": "1.x",
     "history": "4.x",
-    "immutable": "^3.8.2",
+    "immutable": "^4.3.7",
     "jquery": "^3.6.4",
     "jsonapi-parse": "1.x",
     "lodash": "4.x",