chore: Update generation configuration at Sat May 31 02:30:30 UTC 2025

Author: cloud-java-bot

generation_config.yaml

@@ -1,5 +1,5 @@
 gapic_generator_version: 2.58.0
-googleapis_commitish: ea40277431fb821fd5a9b1eb8227535846388770
+googleapis_commitish: 50febc78945b43192d20b6826ee8be2dc27f831e
 libraries_bom_version: 26.61.0
 libraries:
   - api_shortname: spanner