Steps to reproduce: 1. Create a BG company 2. Install the BG Chart of Accounts 3. Install the BG language 4. Switch to the BG language 5. The CoA is not translated This is due to a missing field in the CoA xml: `spoken_languages` which is now fixed. Moreover, the language code of Slovenian has been fixed from `si` (which is the country code) to `sl`. closes odoo/odoo#107353 X-original-commit: ce8f692256714df57864e991e050734b5e04b1f9 Signed-off-by: Laurent Smet <las@odoo.com>