fix(cdm): adjust scheme value based on security level

- Change scheme to "widevine" if security level is 3, otherwise use "L1"
- Apply this logic when setting init_data and license response schemes
- Ensure correct CDM scheme usage according to security level context

unshackle/core/cdm/decrypt_labs_remote_cdm.py

@@ -71,7 +71,7 @@ class DecryptLabsRemoteCDM(RemoteCdm):
             {
                 "init_data": self.pssh.dumps(),
                 "service_certificate": self.req_session.signed_device_certificate,
-                "scheme": "widevine",
+                "scheme": "widevine" if self.security_level == 3 else "L1", # Using L1 CDM,
                 "service": self.service_name,
             },
         )
@@ -103,7 +103,7 @@ class DecryptLabsRemoteCDM(RemoteCdm):
                     "init_data": self.pssh.dumps(),
                     "license_request": self.license_request,
                     "license_response": license_message,
-                    "scheme": "widevine",
+                    "scheme": "widevine" if self.security_level == 3 else "L1",
                 },
             )