update enterprise page (#508)

Author: AdiSai

fern/enterprise/plans.mdx

@@ -11,6 +11,7 @@ If you're building a production application on Vapi, we can help you every step
 
 - Unlimited concurrency and higher rate limits
 - Reserved capacity on our weekly deployment cluster
-- Hands-on 24/7 support with dedicated solutions engineer
-- Shared Slack channel with our team
-- Regular check-in calls with our team
+- Hands-on support from a dedicated Forward-Deployed Engineer
+- Shared Slack channel and regular check-in calls with our team
+- HIPAA BAA and SOC 2 (Type II) certified
+- Single Sign On (SSO) supported for Okta, Azure AD, SAML, and OIDC