Correct type annotations

The type of the `data` parameter of `urllib.request.Request` is bytes. Previously the type annotations for the method
parameters used to pass the data passed via this parameter were the incorrect type `str`.

Author: per1234

reportsizedeltas/reportsizedeltas.py

@@ -581,7 +581,7 @@ def get_json_response(self, url: str):
         except Exception as exception:
             raise exception
 
-    def http_request(self, url: str, data: str | None = None):
+    def http_request(self, url: str, data: bytes | None = None):
         """Make a request and return a dictionary:
         read -- the response
         info -- headers
@@ -599,7 +599,7 @@ def http_request(self, url: str, data: str | None = None):
                 "url": response_object.geturl(),
             }
 
-    def raw_http_request(self, url: str, data: str | None = None):
+    def raw_http_request(self, url: str, data: bytes | None = None):
         """Make a request and return an object containing the response.
 
         Keyword arguments: