fetch data from aws server in emscripten based build

[RDWimmers]

[STDERR] [8:27:25 AM] (SFPL) {"msg":"Could not connect to the endpoint URL: \"https://basetime-general.s3.eu-west-1.amazonaws.com/error_codes.txt\"","exception_type":"EndpointConnectionError","raising_cell":null,"type":"exception"}

Related to -> pyodide/pyodide-recipes#249