[FIX] orjson: support null dict keys

json allows the dump of a dict with a null key
but orjson raises an error 'TypeError: Dict key must be str'

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

Author: jjmaksoud

src/util/json.py

@@ -16,7 +16,9 @@ def load(fp):
 else:
 
     def dumps(value, sort_keys=False):
-        option = orjson.OPT_SORT_KEYS if sort_keys else None
+        option = orjson.OPT_NON_STR_KEYS
+        if sort_keys:
+            option |= orjson.OPT_SORT_KEYS
         return orjson.dumps(value, option=option).decode()
 
     def loads(value):