Update Rust crate nix to 0.27

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
nix	dependencies	minor	0.26 -> 0.27

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Release Notes

nix-rust/nix (nix)

v0.27.1

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Fixed

• Fixed generating the documentation on docs.rs.
  (#​2111)

v0.27.0

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Added

• Added AT_EACCESS to AtFlags on all platforms but android
  (#​1995)
• Add PF_ROUTE to SockType on macOS, iOS, all of the BSDs, Fuchsia, Haiku, Illumos.
  (#​1867)
• Added nix::ucontext module on aarch64-unknown-linux-gnu.
  (#1662)
• Added CanRaw to SockProtocol and CanBcm as a separate SocProtocol constant.
  (#​1912)
• Added Generic and NFLOG to SockProtocol.
  (#​2092)
• Added mq_timedreceive to ::nix::mqueue.
  ([#​1966])(https://github.com/nix-rust/nix/pull/1966)
• Added LocalPeerPid to nix::sys::socket::sockopt for macOS. (#​1967)
• Added TFD_TIMER_CANCEL_ON_SET to ::nix::sys::time::TimerSetTimeFlags on Linux and Android.
  (#​2040)
• Added SOF_TIMESTAMPING_OPT_ID and SOF_TIMESTAMPING_OPT_TSONLY to nix::sys::socket::TimestampingFlag.
  (#​2048)
• Enabled socket timestamping options on Android. (#​2077)
• Added vsock support for macOS (#​2056)
• Added SO_SETFIB and SO_USER_COOKIE to nix::sys::socket::sockopt for FreeBSD.
  (#​2085)
• Added SO_RTABLE for OpenBSD and SO_ACCEPTFILTER for FreeBSD/NetBSD to nix::sys::socket::sockopt.
  (#​2085)
• Added MSG_WAITFORONE to MsgFlags on Android, Fuchsia, Linux, NetBSD,
  FreeBSD, OpenBSD, and Solaris.
  (#​2014)
• Added SO_TS_CLOCK for FreeBSD to nix::sys::socket::sockopt.
  (#​2093)
• Added support for prctl in Linux.
  (#1550)
• nix::socket and nix::select are now available on Redox.
  (#​2012)
• Implemented AsFd, AsRawFd, FromRawFd, and IntoRawFd for mqueue::MqdT.
  (#​2097)
• Add the ability to set kevent_flags on SigEvent.
  (#​1731)

Changed

• All Cargo features have been removed from the default set. Users will need to
  specify which features they depend on in their Cargo.toml.
  (#​2091)

• Implemented I/O safety for many, but not all, of Nix's APIs. Many public
  functions argument and return types have changed:

  Original Type	New Type
  AsRawFd	AsFd
  RawFd	BorrowedFd or OwnedFd

  (#1906)

• Use I/O safety with copy_file_range, and expose it on FreeBSD.
  (#1906)

• The MSRV is now 1.65
  (#​1862)
  (#​2104)

• The epoll interface now uses a type.
  (#​1882)

• With I/O-safe type applied in pty::OpenptyResult and pty::ForkptyResult,
  users no longer need to manually close the file descriptors in these types.
  (#​1921)

• Refactored name parameter of mq_open and mq_unlink to be generic over
  NixPath.
  (#​2102).

• Made clone unsafe, like fork.
  (#​1993)

Removed

• sys::event::{kevent, kevent_ts} are deprecated in favor of
  sys::kevent::Kqueue::kevent, and sys::event::kqueue is deprecated in
  favor of sys::kevent::Kqueue::new.
  (#​1943)
• Removed deprecated IoVec API.
  (#​1855)
• Removed deprecated net APIs.
  (#​1861)
• nix::sys::signalfd::signalfd is deprecated. Use
  nix::sys::signalfd::SignalFd instead.
  (#​1938)
• Removed SigEvent support on Fuchsia, where it was unsound.
  (#​2079)
• Removed flock from ::nix::fcntl on Solaris.
  (#​2082)

v0.26.4

Compare Source

v0.26.3

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Fixed

• Fix: send ETH_P_ALL in htons format
  (#​1925)
• Fix: recvmsg now sets the length of the received sockaddr_un field
  correctly on Linux platforms. (#​2041)
• Fix potentially invalid conversions in
  SockaddrIn::from<std::net::SocketAddrV4>,
  SockaddrIn6::from<std::net::SockaddrV6>, IpMembershipRequest::new, and
  Ipv6MembershipRequest::new with future Rust versions.
  (#​2061)
• Fixed an incorrect lifetime returned from recvmsg.
  (#​2095)

v0.26.2

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Fixed

• Fix SockaddrIn6 bug that was swapping flowinfo and scope_id byte
  ordering.
  (#​1964)

v0.26.1

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Fixed

• Fix UB with sys::socket::sockopt::SockType using SOCK_PACKET.
  (#​1821)

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