Update compatibility matrix

Author: slinkydeveloper

README.md

@@ -32,10 +32,12 @@ The Python SDK is currently in active development, and might break across releas
 
 The compatibility with Restate is described in the following table:
 
-| Restate Server\sdk-python | 0.0/0.1/0.2 | 0.3/0.4/0.5 |
-|---------------------------|-------------|-------------|
-| 1.0                       | ✅           | ❌           |
-| 1.1                       | ✅           | ✅           |
+| Restate Server\sdk-python | 0.0/0.1/0.2 | 0.3/0.4/0.5 | 0.6 |
+|---------------------------|-------------|-------------|-----|
+| 1.0                       | ✅           | ❌           | ❌   |
+| 1.1                       | ✅           | ✅           | ❌   |
+| 1.2                       | ✅           | ✅           | ❌   |
+| 1.3                       | ✅           | ✅           | ✅   |
 
 ## Contributing