[FIX] delivery_schenker: round up package volume

The Schenker API requires a volume to be non-zero, but also forces 2 decimal places.
The 0.01 minimum was removed for avoiding fake volumes when incorrectly configured, but we must still round up cases where the volume is non-zero but rounds to 0.00.
It is also logical to give an overestimate on the volume to the carrier, rather than an underestimate.

round -> repr -> float to avoid Python floating decimals that error when validating with the Schema.
float_round(2.086, precision_digits=2) = 2.0100000000000002
float_repr(float_round(2.086, precision_digits=2), 2) = '2.01' (string)
float(float_repr(float_round(2.086, precision_digits=2), 2)) = 2.01

delivery_schenker/models/delivery_carrier.py

@@ -5,7 +5,7 @@
 
 from odoo import _, api, fields, models
 from odoo.exceptions import UserError
-from odoo.tools import float_compare, float_round
+from odoo.tools import float_compare, float_repr, float_round
 
 from .schenker_request import SchenkerRequest
 
@@ -362,8 +362,20 @@ def _schenker_shipping_information_round_weight(self, weight, precision_digits=2
  return float_round(weight, precision_digits=precision_digits)
 
  def _schenker_shipping_information_round_volume(self, volume, precision_digits=2):
- """The schenker api requires 2 decimal points"""
- return float_round(volume, precision_digits=precision_digits)
+ """
+ The schenker api requires 2 decimal points.
+ Round up to avoid 0 if <0.005.
+ round -> repr -> float to avoid extra decimals that error with the Schema.
+ float_round(2.086, precision_digits=2) = 2.0100000000000002
+ """
+ return float(
+ float_repr(
+ float_round(
+ volume, precision_digits=precision_digits, rounding_method="UP"
+ ),
+ precision_digits=precision_digits,
+ )
+ )
 
  def _schenker_shipping_information_package(self, picking, package):
  weight = package.shipping_weight or package.weight