fix: clock skew set to 1 min with correct format

[nitin-vavdiya]

Description

Fixes the ClockSkew configuration value in appsettings.json to use the correct TimeSpan string format.

Why

Please include an explanation of why this change is necessary as well as relevant motivation and context. List any dependencies that are required for this change.

The current configuration sets ClockSkew as an integer:

"ClockSkew": 60000

When .NET binds a plain integer to a TimeSpan property, it interprets the value as days, not milliseconds. This results in a clock skew of approximately 164 years instead of the intended 1 minute.

Issue

236

Checklist

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[cla-assistant]

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