chore: Update generation configuration at Wed Jul 30 02:42:26 UTC 2025 (#4003)

* chore: Update generation configuration at Tue Jul 29 02:47:10 UTC 2025

* chore: Update generation configuration at Wed Jul 30 02:42:26 UTC 2025

Author: cloud-java-bot

generation_config.yaml

@@ -1,5 +1,5 @@
 gapic_generator_version: 2.60.2
-googleapis_commitish: 6588689155df35bb46974c477505990f0034f569
+googleapis_commitish: 64e82d17e410ff5e71ab3e040ea393db362f2850
 libraries_bom_version: 26.64.0
 libraries:
   - api_shortname: spanner