Log Message:
mold: update to 0.9.6.

mold 0.9.6 is a maintenance release of the mold linker. This release
contains only a single change to fix the following issue:

mold used to create dynamic relocations for imported symbols when
creating a position-dependent executable. That worked fine in an
environment in which position-independent code (PIC) is enabled by
default such as recent versions of most Linux distros. However, it
failed with the "recompile with -fPIC" error if PIC was disabled and
a dynamic relocation was created in a read-only section. mold 0.9.6
fixed the issue by creating copy relocations and PLTs for such symbols.