Fix dialyzer warning on R26 in mod_matrix*

src/mod_matrix_gw.erl

@@ -736,7 +736,7 @@ sign_json(Host, JSON) ->
         binary(),
         [binary()],
         [{binary(), binary()}],
-        none | jiffy:json_object(),
+        none | #{atom() | binary() => jiffy:json_value()},
         [any()],
         [any()]) -> {ok, any()} | {error, any()}.
 

src/mod_matrix_gw_room.erl

@@ -67,7 +67,7 @@
          sender :: binary(),
          prev_events :: [binary()],
          origin_server_ts :: integer(),
-         json :: jiffy:json_object(),
+         json :: #{atom() | binary() => jiffy:json_value()},
          state_map}).
 
 -record(data,