chore: Update generation configuration at Fri Aug 1 02:49:18 UTC 2025

Author: cloud-java-bot

generation_config.yaml

@@ -1,5 +1,5 @@
 gapic_generator_version: 2.60.2
-googleapis_commitish: abf48aa1ce2a5b93f97055b215c1ac8087ead2ef
+googleapis_commitish: bc9d6986980dd271b82b11af93a7033508ec5b8c
 libraries_bom_version: 26.64.0
 libraries:
   - api_shortname: spanner