Revert "FR-resource-identity: Increase vcr timeout" (#15398)

Author: BBBmau

.ci/gcb-pr-downstream-generation-and-test.yml

@@ -277,7 +277,7 @@ steps:
         - COMMIT_SHA=$COMMIT_SHA
 
 # Long timeout to enable waiting on VCR test
-timeout: 93600s
+timeout: 64800s
 options:
     machineType: 'N1_HIGHCPU_32'