Fix GCSUtils IT after Gcs gRPC launch

[Abacn]

Now the feature has launched and enabled for all buckets

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[Abacn]

R: @Polber

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[Abacn]

assign set of reviewers

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[damccorm]

LGTM. CI failure looks unrelated, but would be great if we could get green (tried retriggering)

[Abacn]

It's all Dataflow worker unit tests. Not related to this PR

Attempt 1: https://github.com/apache/beam/runs/32020798611

testOnNewWorkerMetadata_correctlyRemovesStaleWindmillServers (org.apache.beam.runners.dataflow.worker.streaming.harness.FanOutStreamingEngineWorkerHarnessTest) failed

testStreamsStartCorrectly (org.apache.beam.runners.dataflow.worker.streaming.harness.FanOutStreamingEngineWorkerHarnessTest) failed

Attempt 2: https://github.com/apache/beam/runs/32076791412

testOnNewWorkerMetadata_redistributesBudget (org.apache.beam.runners.dataflow.worker.streaming.harness.FanOutStreamingEngineWorkerHarnessTest) failed

cc: @m-trieu who added these tests