libsidplay1-dev is declared Multi-Arch: same, but fails to coinstall.

The file /usr/include/sidplay/compconf.h is shared by libsidplay1-dev
version 1.36.60-1+b2 as present in trixie and version 1.36.60-2 as
present in forky|unstable with varying content.

Please ensure that shared files have bit-identical content across
architectures, move architecture-dependent files to
architecture-dependent paths or remove the Multi-Arch: same field.

Kind regards

Helmut Grohne