Add OCP 4.20 as a supported version in our OLM bundle

Signed-off-by: Christopher Desiniotis <cdesiniotis@nvidia.com>

Author: cdesiniotis

bundle/metadata/annotations.yaml

@@ -14,4 +14,4 @@ annotations:
   operatorframework.io/suggested-namespace: nvidia-gpu-operator
 
   # Annotations to specify OCP versions compatibility.
-  com.redhat.openshift.versions: v4.14-v4.19
+  com.redhat.openshift.versions: v4.14-v4.20