[MIG] account_banking_pain_base: Migration to 12.0

* Standard migration procedure
* README by fragments
* Fixed tests
* Change
* Fix related no readonly in account_banking_pain_base
* Override default partner bank account check on account_payment_partner
* Convert Python date to string

account_banking_pain_base/models/account_payment_order.py

@@ -97,7 +97,7 @@ class AccountPaymentOrder(models.Model):
                     '[', ']', '^', '_', '`', '{', '}', '|', '~', '\\', '!']
                 for unallowed_ascii_char in unallowed_ascii_chars:
                     value = value.replace(unallowed_ascii_char, '-')
-        except:
+        except Exception:
             line = eval_ctx.get('line')
             if line:
                 raise UserError(

account_banking_pain_base/models/res_config_settings.py

@@ -9,11 +9,17 @@ class ResConfigSettings(models.TransientModel):
     _inherit = 'res.config.settings'
 
     initiating_party_issuer = fields.Char(
-        related='company_id.initiating_party_issuer')
+        related='company_id.initiating_party_issuer',
+        readonly=False,
+    )
     initiating_party_identifier = fields.Char(
-        related='company_id.initiating_party_identifier')
+        related='company_id.initiating_party_identifier',
+        readonly=False,
+    )
     initiating_party_scheme = fields.Char(
-        related='company_id.initiating_party_scheme')
+        related='company_id.initiating_party_scheme',
+        readonly=False,
+    )
     group_pain_multiple_identifier = fields.Boolean(
         string='Multiple identifiers',
         implied_group='account_banking_pain_base.'