Bump nix from 0.25.0 to 0.26.2 in /src/agent

[dependabot]

Bumps nix from 0.25.0 to 0.26.2.

Changelog

Sourced from nix's changelog.

[0.26.2] - 2023-01-18

Fixed

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

[0.26.1] - 2022-11-29

Fixed

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

[0.26.0] - 2022-11-29

Added

• Added SockaddrStorage::{as_unix_addr, as_unix_addr_mut} (#1871)
• Added MntFlags and unmount on all of the BSDs.
• Added any() and all() to poll::PollFd. (#1877)
• Add MntFlags and unmount on all of the BSDs. (#1849)
• Added a Statfs::flags method. (#1849)
• Added NSFS_MAGIC FsType on Linux and Android. (#1829)
• Added sched_getcpu on platforms that support it. (#1825)
• Added sched_getaffinity and sched_setaffinity on FreeBSD. (#1804)
• Added line_discipline field to Termios on Linux, Android and Haiku (#1805)
• Expose the memfd module on FreeBSD (memfd was added in FreeBSD 13) (#1808)
• Added domainname field of UtsName on Android and Linux (#1817)
• Re-export RLIM_INFINITY from libc (#1831)
• Added syncfs(2) on Linux (#1833)
• Added faccessat(2) on illumos (#1841)
• Added eaccess() on FreeBSD, DragonFly and Linux (glibc and musl). (#1842)
• Added IP_TOS SO_PRIORITY and IPV6_TCLASS sockopts for Linux (#1853)
• Added new_unnamed and is_unnamed for UnixAddr on Linux and Android. (#1857)
• Added SockProtocol::Raw for raw sockets (#1848)
• added IP_MTU (IpMtu) IPPROTO_IP sockopt on Linux and Android. (#1865)

... (truncated)

Commits

• 1e3f062 (cargo-release) version 0.26.2
• 013931b Merge #1974
• 8aa85bb fix: clippy::size_of_ref
• 4a83f8b Drop x86_64-unknown-darwin to Tier 2
• 975a3d5 Tidy up the CHANGELOG a bit.
• 6fd7418 Fix endian swap on SocketAddrV6.
• e7a646d (cargo-release) version 0.26.1
• 749bf75 Merge #1821
• 8e91b28 Fix UB in the SO_TYPE sockopt
• 12fb354 [skip ci] add a CHANGELOG section for the next release
• Additional commits viewable in compare view

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