chore: Update generation configuration at Fri Apr 18 02:28:25 UTC 2025

Author: cloud-java-bot

generation_config.yaml

@@ -1,5 +1,5 @@
 gapic_generator_version: 2.55.1
-googleapis_commitish: 819f7984a7eb2f494629318bfa802822c1f99791
+googleapis_commitish: b947e523934dbac5d97613d8aa08e04fc38c5fb6
 libraries_bom_version: 26.59.0
 libraries:
   - api_shortname: spanner