Update Rust crate socket2 to v0.6.1

[oxide-renovate]

This PR contains the following updates:

Package	Type	Update	Change
socket2	dependencies	patch	0.6.0 -> 0.6.1

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Release Notes

rust-lang/socket2 (socket2)

v0.6.1

Compare Source

Added

• Added support for Windows Registered I/O (RIO)
  (#​604).
• Added support for TCP_NOTSENT_LOWAT on Linux via Socket::(set_)tcp_notsent_lowat
  (#​611).
• Added support for SO_BUSY_POLL on Linux via Socket::set_busy_poll
  (#​607).
• SockFilter::new is now a const function
  (#​609).

Changed

• Updated the windows-sys dependency to version 0.60
  (#​605).

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