chore: Update generation configuration at Fri Jan 3 02:24:20 UTC 2025 (#3578)

Co-authored-by: rahul2393 <[email protected]>

Author: cloud-java-bot

generation_config.yaml

@@ -1,5 +1,5 @@
 gapic_generator_version: 2.51.0
-googleapis_commitish: 52e410823122cf44d265c3beecb86c773db248a2
+googleapis_commitish: c72d7385435589176aa6e44563fcfbc795b9a476
 libraries_bom_version: 26.52.0
 libraries:
   - api_shortname: spanner