chore(librarian): update last_generated_commit for dlp (googleapis#14408)

See googleapis#14338 which
references
googleapis/googleapis@d300b15
in the PR description

Author: parthea

.librarian/state.yaml

@@ -2,7 +2,7 @@ image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-li
 libraries:
 - id: google-cloud-dlp
   version: 3.31.0
-  last_generated_commit: 97a83d76a09a7f6dcab43675c87bdfeb5bcf1cb5
+  last_generated_commit: d300b151a973ce0425ae4ad07b3de957ca31bec6
   apis:
   - path: google/privacy/dlp/v2
   source_roots: