changelog entry for gdal 3.8.4

#571

Author: jdries

CHANGELOG.md

@@ -13,6 +13,7 @@ without compromising stable operations.
 ## Unreleased
 
 - Export to JSON is now more robust, supports datetime objects returned by dimension_labels, and will default to the string representation.
+- GDAL upgraded to 3.8.4 and Orfeo Toolbox to 8.1.2. This mainly reduces the volume of bytes read from object storage by GDAL. ([#571](https://github.com/Open-EO/openeo-geopyspark-driver/issues/571))
 
 ## 0.26.2