[cd] Bump CIRCT from firtool-1.72.0 to firtool-1.73.0 (#4002)

* [binder] Support constructing integers larger than 64 bits
* [cd] Bump CIRCT from firtool-1.72.0 to firtool-1.73.0
* mill format

Co-authored-by: Asuna <SpriteOvO@gmail.com>
Co-authored-by: chiselbot <chiselbot@users.noreply.github.com>
Co-authored-by: Will Dietz <will.dietz@sifive.com>