Build fails with the following error

```
CMake Error at build/cmake/Modules/FindMySQLCppConn.cmake:55 (file):
file STRINGS file
"/var/tmp/portage/dev-db/mysql-workbench-8.0.16/work/mysql-workbench-community-8.0.16-src/MySQLCppConn_INCLUDE_DIR-NOTFOUND/cppconn/version_info.h"
cannot be read.
Call Stack (most recent call first):
CMakeLists.txt:78 (find_package)

ERROR Unable to detect MySQLCppConn version
```

Already fixed in gentoo https://bugs.gentoo.org/702666