"–version" - one line version message, e.g., “GDAL 3.6.3, released
2023/03/12”
"GDAL_VERSION_NUM" - formatted as a string, e.g., “3060300” for
GDAL 3.6.3.0
"GDAL_RELEASE_DATE" - formatted as a string, e.g., “20230312”
"GDAL_RELEASE_NAME" - e.g., “3.6.3”