Update set-up-sso-saml-2.0.md (#4323)

Add note on expiring certs

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website/docs/docs/cloud/manage-access/set-up-sso-saml-2.0.md

@@ -424,7 +424,7 @@ To complete setup, follow the steps below in dbt Cloud:
    | Log in with | SAML 2.0 |
    | Identity Provider SSO Url | Paste the **Identity Provider Single Sign-On URL** shown in the IdP setup instructions |
    | Identity Provider Issuer | Paste the **Identity Provider Issuer** shown in the IdP setup instructions |
-   | X.509 Certificate | Paste the **X.509 Certificate** shown in the IdP setup instructions |
+   | X.509&nbsp;Certificate | Paste the **X.509 Certificate** shown in the IdP setup instructions; <br />**Note:** When the certificate expires, an Okta admin will have to generate a new one to be pasted into dbt Cloud for uninterrupted application access. |
    | Slug | Enter your desired login slug. |
     <Lightbox src="/img/docs/dbt-cloud/dbt-cloud-enterprise/okta/okta-6-setup-integration.png"
         title="Configuring the application in dbt Cloud" />