fix(deps): update dependency @hello.nrfcloud.com/lambda-helpers to v3

Author: renovate[bot]

package.json

@@ -127,7 +127,7 @@
     "@bifravst/run": "1.2.0",
     "@bifravst/timestream-helpers": "6.1.0",
     "@hello.nrfcloud.com/certificate-helpers": "1.0.0",
-    "@hello.nrfcloud.com/lambda-helpers": "2.1.10",
+    "@hello.nrfcloud.com/lambda-helpers": "3.0.19",
     "@hello.nrfcloud.com/nrfcloud-api-helpers": "6.0.228",
     "@hello.nrfcloud.com/proto": "15.4.14",
     "@hello.nrfcloud.com/proto-map": "16.3.15",