fix(deps): update dependency @googleapis/iam to v34 (#2159)

Author: renovate-bot

samples/package.json

@@ -16,7 +16,7 @@
     "@google-cloud/language": "^7.0.0",
     "@google-cloud/storage": "^7.0.0",
     "@aws-sdk/credential-providers": "^3.58.0",
-    "@googleapis/iam": "^33.0.0",
+    "@googleapis/iam": "^34.0.0",
     "google-auth-library": "^10.4.0",
     "dotenv": "^17.0.0",
     "gaxios": "^7.0.0",