pipelines: adding maxRetries option to s3 config examples

[nsingla]

Description of Changes

Updating Object Store Configuration with maxRetries example, so that in case someone want to override the default value, they have an example to refer to

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[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

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