[Pkg-rust-maintainers] Bug#1125883: rust-ruzstd: please upgrade to v0.8

[Greg Lamberson]

A couple more downstream consumers for the record. Two no_std
filesystem-reader crates from the LamBoot bootloader project that I am
packaging for the archive use ruzstd 0.8 as a decompression dependency, so they
join the set waiting on this upgrade:

  - lamfold   (read-only media-filesystem stack; EROFS/squashfs zstd codecs)
  - lamzfs    (read-only ZFS; zstd-compressed blocks)

Both require the 0.8 API specifically -- the decoding module and the no_std
io::Read surface are 0.8-only -- so a relax to the archive's 0.7 is not an
option for them; they are genuinely blocked on 0.8 reaching unstable.

No action requested beyond what is already tracked here; just recording the
additional rdeps.