fix type

Author: giancarloromeo

services/web/server/src/simcore_service_webserver/projects/projects_api.py

@@ -385,7 +385,7 @@ async def _get_default_pricing_and_hardware_info(
 _MACHINE_TOTAL_RAM_SAFE_MARGIN_RATIO: Final[
     float
 ] = 0.1  # NOTE: machines always have less available RAM than advertised
-_SIDECARS_OPS_SAFE_RAM_MARGIN: Final[ByteSize] = ByteSize("1GiB")
+_SIDECARS_OPS_SAFE_RAM_MARGIN: Final[ByteSize] = TypeAdapter(ByteSize).validate_python("1GiB")
 _CPUS_SAFE_MARGIN: Final[float] = 1.4
 _MIN_NUM_CPUS: Final[float] = 0.5