chore: Update generation configuration at Tue Sep 30 02:28:20 UTC 2025

Author: cloud-java-bot

generation_config.yaml

@@ -1,6 +1,6 @@
 gapic_generator_version: 2.62.2
-googleapis_commitish: 31b413bc4feb03f6849c718048c2b9998561b5fa
-libraries_bom_version: 26.68.0
+googleapis_commitish: eab82ec804dfd76372ca369910ccd0766ee02e5c
+libraries_bom_version: 26.69.0
 libraries:
   - api_shortname: spanner
     name_pretty: Cloud Spanner