Update README.md

Author: aram356

README.md

@@ -50,7 +50,7 @@ brew install fastly/tap/fastly
 fastly version
 ```
 
-:warning: fastly cli version should be at least v11.3.0
+:warning: fastly cli version should be at least v12.0.0
 
 #### Create profile and follow interactive prompt for pasting your API Token created earlier:
 ```sh