Log Message:
mold: update to 1.3.1.

mold 1.3.1 is a maintenance release of the high-speed linker. This release
contains the following minor bug fixes.

Bug fixes and compatibility improvements:

- mold now supports .preinit_array sections. Without this, AddressSanitizer
  didn't work in some environments. (3b75398)
- [ARM32] R_ARM_MOVT_PREL and R_ARM_PREL31 relocations are now handled
  correctly so that mold no longer emit spurious "recompile with -fPIC"
  errors. (5294300)