Update immutable to v5.1.5 (#426)

Author: Goodwine

package.json

@@ -63,7 +63,7 @@
   "dependencies": {
     "@bufbuild/protobuf": "^2.5.0",
     "colorjs.io": "^0.5.0",
-    "immutable": "^5.0.2",
+    "immutable": "^5.1.5",
     "rxjs": "^7.4.0",
     "supports-color": "^8.1.1",
     "sync-child-process": "^1.0.2",