Merge pull request #772 from citizensadvice/dependabot/npm_and_yarn/immutable-5.1.5

[dependabot:npm] Bump immutable from 5.0.2 to 5.1.5

Author: leeky

yarn.lock

@@ -1897,9 +1897,9 @@ ignore@^7.0.5:
   integrity sha512-Hs59xBNfUIunMFgWAbGX5cq6893IbWg4KnrjbYwX3tx0ztorVgTDA6B2sxf8ejHJ4wz8BqGUMYlnzNBer5NvGg==
 
 immutable@^5.0.2:
-  version "5.0.2"
-  resolved "https://registry.yarnpkg.com/immutable/-/immutable-5.0.2.tgz#bb8a987349a73efbe6b3b292a9cbaf1b530d296b"
-  integrity sha512-1NU7hWZDkV7hJ4PJ9dur9gTNQ4ePNPN4k9/0YhwjzykTi/+3Q5pF93YU5QoVj8BuOnhLgaY8gs0U2pj4kSYVcw==
+  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@^3.2.1, import-fresh@^3.3.0:
   version "3.3.0"