New asciinema updated with v1beta1

Also modified the task.yaml to reflect the new structure of tasks where spec.inputs (from v1alpha1) is now split into spec.params and spec.resources.inputs.

asciinema/task.yaml

@@ -3,9 +3,10 @@ kind: Task
 metadata:
   name: build-go-app-task
 spec:
-  inputs:
-    # Some inputs, such as your GitHub repository
-    ...
+  resources:
+    inputs:
+      # Some inputs, such as your GitHub repository
+      ...
   steps:
   - name: build
     image: golang