Merge pull request #8859 from dokku/dependabot/npm_and_yarn/tests/apps/multi/immutable-5.1.9

chore(deps): bump immutable from 5.1.5 to 5.1.9 in /tests/apps/multi

tests/apps/multi/package-lock.json

@@ -370,9 +370,9 @@
       }
     },
     "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==",
       "license": "MIT"
     },
     "node_modules/is-extglob": {