Upgrade dependency to window-sys v0.61.2

[fabiensanglard]

The signature of NotifyIpInterfaceChange has changed which breaks if-addrs with the latest windows-sys. This CL fixes the build.

[fabiensanglard]

I am seeing Windows failure on presubmit I did not see locally.

Run cargo build
    Updating crates.io index
 Downloading crates ...
  Downloaded windows-link v0.2.1
  Downloaded windows-sys v0.61.2
error: package `windows-sys v0.61.2` cannot be built because it requires rustc 1.71 or newer, while the currently active rustc version is 1.64.0
Error: Process completed with exit code 1.

I am not familiar with the setup. Should I add a

[package]
rust-version = "1.71"

in Cargo.toml?