video.cloud-client.analyze.beta_snippets_test: test_detect_text failed

Note: #2994 was also for this test, but it was closed more than 10 days ago. So, I didn't mark it flaky.

----

commit: 1d417b569d58e944f338c1213e106b7c62394d33
buildURL: [Build Status](https://source.cloud.google.com/results/invocations/49645075-b202-46f0-8f63-1ee8ac8c80c3), [Sponge](http://sponge2/49645075-b202-46f0-8f63-1ee8ac8c80c3)
status: failed