[Vertex AI] Fix testCountTokens_jsonSchema integration test
#744
| Job | Run time |
|---|---|
| 6m 54s | |
| 1m 14s | |
| 2m 58s | |
| 5m 25s | |
| 3m 57s | |
| 3m 23s | |
| 7m 48s | |
| 1m 52s | |
| 2m 20s | |
| 1m 50s | |
| 1m 47s | |
| 2m 14s | |
| 1m 53s | |
| 1m 54s | |
| 45m 29s |