Improved processing of bank transactions

[vohmar]

Related to PR: #130

With this development we attempted to process better typical bank transactions that were not handled and thus generated processing error notifications. Unfortunately the fix did not work and we still receive billing reference error messages

few examples:

#<struct Lhv::ConnectApi::Messages::CreditDebitNotification::Transaction amount=X.X, currency="EUR", date=Tue, 19 Nov 2024, payment_reference_number=nil, payment_description="billing.internet.ee/EE, st852449, 141016">

#<struct Lhv::ConnectApi::Messages::CreditDebitNotification::Transaction amount=X.X currency="EUR", date=Mon, 18 Nov 2024, payment_reference_number=nil, payment_description="Kaardimaksete tulu 18.11.2024">

#<struct Lhv::ConnectApi::Messages::CreditDebitNotification::Transaction amount=X.X, currency="EUR", date=Fri, 15 Nov 2024, payment_reference_number=nil, payment_description="billing.internet.ee/EE, st123892, Ref:11230, 140956, 140957, 140975">