chore: KEDA was accepted as CNCF Incubation project (kedacore#2039)

KEDA was accepted as CNCF Incubation project as per cncf/toc#622

Signed-off-by: Tom Kerkhove <kerkhove.tom@gmail.com>

README.md

@@ -13,7 +13,7 @@ resource definition.
 KEDA can run on both the cloud and the edge, integrates natively with Kubernetes components such as the Horizontal
 Pod Autoscaler, and has no external dependencies.
 
-We are a Cloud Native Computing Foundation (CNCF) sandbox project.
+We are a Cloud Native Computing Foundation (CNCF) incubation project.
 <p align="center"><img src="https://raw.githubusercontent.com/kedacore/keda/main/images/logo-cncf.svg" height="75px"></p>
 
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