chore: Update generation configuration at Tue Aug 26 02:31:41 UTC 2025

Author: cloud-java-bot

generation_config.yaml

@@ -1,5 +1,5 @@
 gapic_generator_version: 2.62.0
-googleapis_commitish: 525c95a7a122ec2869ae06cd02fa5013819463f6
+googleapis_commitish: b738e78ed63effb7d199ed2d61c9e03291b6077f
 libraries_bom_version: 26.66.0
 libraries:
   - api_shortname: spanner