fix(deps): update dependency @hello.nrfcloud.com/proto to v6.4.42

Author: renovate[bot]

package-lock.json

@@ -27,7 +27,7 @@
     "postinstall": "cp -r node_modules/svg-country-flags/svg/ static/flags"
   },
   "dependencies": {
-    "@hello.nrfcloud.com/proto": "6.4.38",
+    "@hello.nrfcloud.com/proto": "6.4.42",
     "@sentry/browser": "7.108.0",
     "@sinclair/typebox": "0.32.18",
     "classnames": "2.5.1",