Update dependency @tryghost/helpers to v1.1.81

Author: renovate[bot]

yarn.lock

@@ -342,9 +342,9 @@
     axios "^0.27.0"
 
 "@tryghost/helpers@^1.1.6":
-  version "1.1.80"
-  resolved "https://registry.yarnpkg.com/@tryghost/helpers/-/helpers-1.1.80.tgz#b203120354ca43c7d3bb1d129c65b28d0ac0cb75"
-  integrity sha512-sKzAt38eckaLDYjjgJdK/zvcnU2cXVl7L5io7Ck2NDbtJMO8P7w3KvQwYs1/29X4rKG3FYlo4+TfzkgLiK+YcA==
+  version "1.1.81"
+  resolved "https://registry.yarnpkg.com/@tryghost/helpers/-/helpers-1.1.81.tgz#c98ad86191beb46ea28caf0814804cec8a51db1b"
+  integrity sha512-sxRIi4X+b3DD9QnFe/VrCwZUJ5R450zqVUQBwmYbPb36ldp7hBCQK9dgzUJw1B4TlRGmyUxqnwnaVA4Wy0sm7Q==
   dependencies:
     lodash-es "^4.17.11"