cargo(deps): update nix requirement from 0.18 to 0.26

[dependabot[bot]]

Updates the requirements on nix to permit the latest version.

Changelog

Sourced from nix's changelog.

[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)

Changed

• The MSRV is now 1.56.1 (#1792)

... (truncated)

Commits

• 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
• e0af65b (cargo-release) version 0.26.0
• 1e0de75 Merge #1891
• 17e56e1 Prepare for release 0.26.0
• 206556d Merge pull request #1890 from asomers/old-changelogs
• ff219e3 [skip ci] add CHANGELOG entries for old point releases.
• eabcb48 Merge pull request #1888 from asomers/0.26.0-CHANGELOG
• Additional commits viewable in compare view

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