Merge branch 'Set_Default_SamplingPeriod' into 'master'

Added a default sampling period of Minute to the data.py file. This will allow...

See merge request !392

geomagio/api/ws/data.py

@@ -76,7 +76,7 @@ def get_data_query(
         " NOTE: when using 'iaga2002' output format, a maximum of 4 elements is allowed",
     ),
     sampling_period: Union[SamplingPeriod, float] = Query(
-        None,
+        SamplingPeriod.MINUTE,
         title="data rate",
         description="Interval in seconds between values.",
     ),