Merge branch 'point-calibrations-metadata-to-production-url' into 'master'

Update InstrumentCalibrations to point at production database.

See merge request !359

geomagio/metadata/instrument/InstrumentCalibrations.py

@@ -322,7 +322,7 @@ def get_instrument_calibrations(
         metadata = []
 
         factory = MetadataFactory(
-            url=metadata_url or "https://staging-geomag.cr.usgs.gov/ws/secure/metadata",
+            url=metadata_url or "https://geomag.usgs.gov/ws/secure/metadata",
         )
         query = Metadata(
             category=MetadataCategory.INSTRUMENT,