chore: Update generation configuration at Sun Oct 19 02:34:40 UTC 2025

Author: cloud-java-bot

generation_config.yaml

@@ -1,5 +1,5 @@
 gapic_generator_version: 2.63.0
-googleapis_commitish: d9bfa3b37fe3be55e77bf06d625ab9a5000456c1
+googleapis_commitish: c288189b43c016dd3cf1ec73ce3cadee8b732f07
 libraries_bom_version: 26.70.0
 libraries:
   - api_shortname: spanner