[FIX] orjson: serialize namedtuples

As opposed to json lib, orjson cannot serialize namedtuple objects
'TypeError: Type is not JSON serializable'

Part-of: #155
Related: odoo/upgrade#6662
Signed-off-by: Christophe Simonis (chs) <[email protected]>

Author: jjmaksoud

src/util/json.py

@@ -16,6 +16,10 @@ def load(fp):
 else:
 
     def dumps(value, sort_keys=False):
+        if isinstance(value, tuple):
+            # downcast namedtuples
+            value = tuple(value)
+
         option = orjson.OPT_NON_STR_KEYS
         if sort_keys:
             option |= orjson.OPT_SORT_KEYS