docs: releasing v0.9.0

Signed-off-by: Dario Tranchitella <dario@tranchitella.eu>

Author: prometherion

README.md

@@ -67,6 +67,7 @@ The following compatibility matrix is useful to match them according to the Cont
 
 | CP provider | Cluster API    | Kamaji  | TCP API version |
 |-------------|----------------|---------|-----------------|
+| v0.9.0      | v1.5.x, v1.6.x | ~v0.6.x | `v1alpha1`      |
 | v0.8.0      | v1.5.x, v1.6.x | ~v0.5.x | `v1alpha1`      |
 | v0.7.x      | v1.5.x, v1.6.x | ~v0.4.0 | `v1alpha1`      |
 | v0.6.0      | v1.5.x, v1.6.x | ~v0.4.0 | `v1alpha1`      |