The only change is a change of the version number.
In MySQL 5.6.46, the copyright comments in a number of files were changed
in mysql/mysql-server@f1a006ece7521cb02f9b961e6fad04d12ddfbab3
but there was no functional change to InnoDB code.
This was also reflected by XtraDB. We are not changing the copyright
comments in MariaDB Server for now.

Between MySQL 5.6.46 and 5.6.47, InnoDB was not changed at all.

Actually, we had forgotten to update the InnoDB version number to
5.6.46. With this change, we are updating InnoDB
from 5.6.45 to 5.6.47 and XtraDB from 5.6.45-86.1 to 5.6.46-86.2.