Add APIwiz to adopters (#7067)

Signed-off-by: Anders Eknert <anders@eknert.com>

ADOPTERS.md

@@ -9,6 +9,13 @@ production users that have added themselves (in alphabetical order):
 * [2U, Inc](https://2u.com) has incorporated OPA into their SDLC for both Terraform and Kubernetes deployments.
   Shift left!
 
+* [APIwiz](https://www.apiwiz.io) has implemented OPA as a centralized service to enforce consistent
+  and secure authorization decisions across all internal APIs. By delegating authorization logic to OPA,
+  APIwiz streamlines access control, ensuring robust security throughout the platform. Furthermore, OPA
+  has been seamlessly integrated into APIwiz's API Builder, enabling users to embed policy-driven workflows.
+  This integration provides precise control over workflows, enhancing both the security and efficiency of
+  the platform's operations.
+
 * [Appsflyer](https://www.appsflyer.com/) uses OPA to make consistent
   authorization decisions by hundreds of microservices for UI and API data
   access. All authorization decisions are delegated to OPA that is deployed as a