Update Testgrid Canary to v20260901-v0.0.176-4-g734ae2b9 - #1329

Update Testgrid Canary to v20260901-v0.0.176-4-g734ae2b9#1329

google-oss-prow[bot] merged 1 commit into

GoogleCloudPlatform:mainGoogleCloudPlatform/testgrid:mainfrom

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