[Pkg-rust-maintainers] Bug#1068667: rust-futures-lite: please upgrade to branch v2

[Peter Green]

> Please upgrade to, or separately provide, upstream branch v2.

rdeps:

Package: loupe - bug report filed with patch
Package: rust-async-channel - no changes needed.
Package: rust-async-executor - no changes needed
Package: rust-async-fs - no changes needed
Package: rust-async-global-executor - fix uploaded to unstable.
Package: rust-async-io - no changes needed
Package: rust-async-lock - no changes needed
Package: rust-async-net - no changes needed
Package: rust-async-process - no changes needed
Package: rust-async-std - bug report filed with trivial fix
Package: rust-async-task - no changes needed
Package: rust-async-zip - fix uploaded to unstable.
Package: rust-blocking - no changes needed
Package: rust-event-listener - bug report filed with trivial fix.
Package: rust-oo7 - fix uploaded to unstable.
Package: rust-smol - no changes needed
Package: rust-crosstermion - no changes needed
Package: rust-gix-packetline - no changes needed
Package: rust-gix-protocol - fix uploaded to unstable
Package: rust-gix-transport - no changes needed.
Package: rust-glycin-utils - fix uploaded to unstable
Package: rust-prodash - no changes needed