Replacing screenshot for certificate regeneration and adding an inline alert to tell customers to migrate

Author: theManikJindal

src/pages/guides/email-alerts/cert-expiry.md

@@ -12,6 +12,10 @@ The certificate key pairs generated on the Developer Console expire after a year
 
 Upon receiving the email alert, you need to replace the expiring certificate key pair with a new pair in a timely fashion to ensure all your custom integrations and applications continue to work. See this step-by-step guide on replacing certificate key pairs for more detailed instructions.
 
+<InlineAlert slots="text"/>
+
+Service Account (JWT) credentials have been deprecated in favor of the OAuth Server-to-Server credentials. Your applications using the Service Account (JWT) credentials will stop working after Jan 27, 2025. **You must migrate to the new credential by Jan 27, 2025 in order to ensure your application continues to function. View our [migration guide](../ServerToServerAuthentication/migration.md) to know more.**
+
 ## A step-by-step guide to replacing expiring certificate key pairs
 
 ### Step 1: Identify application and Project maintainers