[FIX] account_invoice_tax: fix tax amount_currency in NC

[fw-bot-adhoc]

Forward-Port-Of: #270

[roboadhoc]

[fw-bot-adhoc]

@maq-adhoc @rov-adhoc cherrypicking of pull request #270 failed.

stdout:

CONFLICT (modify/delete): account_invoice_tax/models/account_move.py deleted in 24dad28271a7be0f910c94eae5e492a680c86b6a and modified in dc672e219e1cb64ca2a1ebd305f4db77b03fdb53.  Version dc672e219e1cb64ca2a1ebd305f4db77b03fdb53 of account_invoice_tax/models/account_move.py left in tree.

Either perform the forward-port manually (and push to this branch, proceeding as usual) or close this PR (maybe?).

you can use git-fw to re-do the forward-port for you locally.

⚠️ after resolving this conflict, you will need to merge it via @roboadhoc.

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[fw-bot-adhoc]

@maq-adhoc @rov-adhoc this forward port of #270 is awaiting action (not merged or closed).