Define the explicit scope for the sso-oidc client

As
https://docs.aws.amazon.com/sdkref/latest/guide/feature-sso-credentials.html
states, the SSO session has to have the `sso:account:access` scope
assigned.

#2

Author: extsoft

aws-creds.py

@@ -54,7 +54,7 @@ def cache_file(self) -> Path:
 
 def _new_session_token(identity_center: IdentityCenter) -> str:
     sso_oidc = Session().create_client("sso-oidc", region_name=identity_center.ic_region)
-    client_creds = sso_oidc.register_client(clientName="myapp", clientType="public")
+    client_creds = sso_oidc.register_client(clientName=_prog, clientType="public", scopes=["sso:account:access"])
     device_authorization = sso_oidc.start_device_authorization(
         clientId=client_creds["clientId"],
         clientSecret=client_creds["clientSecret"],