chore: Change repo owner (#2349)

* chore: Change repo owner

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: ansh0l

.github/blunderbuss.yml

@@ -1,7 +1,7 @@
 # Configuration for the Blunderbuss GitHub app. For more info see
 # https://github.com/googleapis/repo-automation-bots/tree/main/packages/blunderbuss
 assign_issues:
-  - ansh0l
+  - rajatbhatta
 assign_prs_by:
 - labels:
   - samples

README.md

@@ -49,7 +49,7 @@ If you are using Maven without BOM, add this to your dependencies:
 If you are using Gradle 5.x or later, add this to your dependencies:
 
 ```Groovy
-implementation platform('com.google.cloud:libraries-bom:26.10.0')
+implementation platform('com.google.cloud:libraries-bom:26.11.0')
 
 implementation 'com.google.cloud:google-cloud-spanner'
 ```