chore(deps): bump cloud.google.com/go/pubsub from 1.48.0 to 1.48.1 (#6686)

Bumps [cloud.google.com/go/pubsub](https://github.com/googleapis/google-cloud-go) from 1.48.0 to 1.48.1.
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/main/CHANGES.md)
- [Commits](https://github.com/googleapis/google-cloud-go/compare/pubsub/v1.48.0...pubsub/v1.48.1)

---
updated-dependencies:
- dependency-name: cloud.google.com/go/pubsub
  dependency-version: 1.48.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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go.mod

@@ -6,7 +6,7 @@ toolchain go1.24.1
 
 require (
 	cloud.google.com/go v0.120.0 // indirect
-	cloud.google.com/go/pubsub v1.48.0
+	cloud.google.com/go/pubsub v1.48.1
 	cloud.google.com/go/storage v1.51.0
 	github.com/Azure/azure-pipeline-go v0.2.3
 	github.com/Azure/azure-storage-blob-go v0.15.0