fix(deps): update dependency @hello.nrfcloud.com/proto-map to ^16.3.21

Author: renovate[bot]

package-lock.json

@@ -102,7 +102,7 @@
     "generate"
   ],
   "peerDependencies": {
-    "@hello.nrfcloud.com/proto-map": "^16.3.20",
+    "@hello.nrfcloud.com/proto-map": "^16.3.21",
     "@sinclair/typebox": "^0.34.33",
     "ajv": "^8.17.1",
     "jsonata": "^2.0.6"