As reported by Microsoft: https://devblogs.microsoft.com/microsoft365dev/retirement-of-office-365-connectors-within-microsoft-teams/

The connector for webhooks in 365 is changing which will result in existing webhooks being retired.

This will mean webhooks saved as secrets on Jira Automation will need to change.

The new URL generated by the new MS Workflows function is not an allowed format on Jira Automation secrets.

This is to update the allowed format from

Original: https://company.webhook.office.com/webhookb2/

New: https://prod-XXX.westeurope.logic.azure.com:443/workflows/