make http request upper case when sending data to OPA

gso/auth/oidc_policy_helper.py

@@ -425,7 +425,7 @@ def opa_decision(
                 **(opa_kwargs or {}),
                 **user_info,
                 "resource": request.url.path,
-                "method": request_method,
+                "method": request_method.upper(),
                 "arguments": {"path": request.path_params, "query": {**request.query_params}, "json": json},
             }
         }