Use max trials as 3 for Notebook test runs

[javed-73]

Description

Image object detection notebook is failing because of bad input.

image_object_detection_job = automl.image_object_detection(
compute=compute_name,
experiment_name=exp_name,
training_data=my_training_data_input,
validation_data=my_validation_data_input,
target_column_name="label",
primary_metric="mean_average_precision",
tags={"my_custom_tag": "My custom value"},
)

image_object_detection_job.set_limits(
max_trials=2,
max_concurrent_trials=2,
)

Issue: max trials used for running the sweep pipeline job uses max trials as 2, which is throwing "Error: Input request is invalid" as can be seen in the job

Updating to max trials as 3 fixes it.
Job

Checklist

• I have read the contribution guidelines.
  • General
  • SDK
  • CLI
• I have coordinated with the docs team (mldocs@microsoft.com) if this PR deletes files or changes any file names or file extensions.
• Pull request includes test coverage for the included changes.
• This notebook or file is added to the CODEOWNERS file, pointing to the author or the author's team.