Avoid deprecated implicit single elt numpy array conversion

Author: dagewa

src/nxmx/__init__.py

@@ -917,7 +917,7 @@ def underload_value(self) -> int | None:
         to the underload_value.
         """
         if "underload_value" in self._handle:
-            return int(self._handle["underload_value"][()])
+            return int(self._handle["underload_value"][()].item())
         return None
 
     @cached_property
@@ -932,7 +932,7 @@ def saturation_value(self) -> int | None:
         """
         if "saturation_value" in self._handle:
             try:
-                return int(self._handle["saturation_value"][()])
+                return int(self._handle["saturation_value"][()].item())
             except TypeError as e:
                 logger.warning(f"Error extracting {self.path}/saturation_value: {e}")
         return None