Update dependencies to solve build error

[giggio]

It seems Rust 64 has created an error when building socket2. This is causing this package to not build.

To know more, see:
NixOS/nixpkgs#194845

Maybe a cargo update is enough to update the dependencies cache but maybe trust-dns-resolver, the dependency bringing socket2 needs an update.

Update: I have confirmed that running cargo update fixes the build. Submitting a new version with the updated Cargo.lock should be enough.

[giggio]

This is the build log:

~/p/bandwhich on  main 🤷1 is 📦 v0.20.0 via 🦀 v1.64.0                                                                                          at 10:05:31
!✖1 ❯ cargo build
    Updating git repository `https://github.com/tailhook/resolv-conf`
  Downloaded resolv-conf v0.7.0
  Downloaded serde_derive v1.0.102
  Downloaded 2 crates (67.0 KB) in 1.50s
   Compiling libc v0.2.76
   Compiling cfg-if v0.1.9
   Compiling proc-macro2 v1.0.6
   Compiling unicode-xid v0.2.0
   Compiling syn v1.0.11
   Compiling log v0.4.8
   Compiling memchr v2.2.1
   Compiling lazy_static v1.4.0
   Compiling rustc-serialize v0.3.24
   Compiling term v0.4.6
   Compiling unicode-xid v0.0.3
   Compiling bitflags v0.5.0
   Compiling maybe-uninit v2.0.0
   Compiling autocfg v0.1.7
   Compiling cc v1.0.47
   Compiling bitflags v1.2.1
   Compiling regex-syntax v0.6.12
   Compiling proc-macro-nested v0.1.3
   Compiling unicode-segmentation v1.6.0
   Compiling slab v0.4.2
   Compiling getrandom v0.1.13
   Compiling smallvec v1.0.0
   Compiling futures-core v0.3.1
   Compiling futures-sink v0.3.1
   Compiling glob v0.2.11
   Compiling matches v0.1.8
   Compiling ppv-lite86 v0.2.6
   Compiling pnet_base v0.26.0
   Compiling futures-task v0.3.1
   Compiling failure_derive v0.1.6
   Compiling futures-io v0.3.1
   Compiling serde v1.0.102
   Compiling pin-utils v0.1.0-alpha.4
   Compiling arc-swap v0.4.3
   Compiling unicode-width v0.1.8
   Compiling crc32fast v1.2.0
   Compiling scopeguard v1.0.0
   Compiling rustc-demangle v0.1.16
   Compiling bytes v0.5.0
   Compiling pin-project-lite v0.1.1
   Compiling match_cfg v0.1.0
   Compiling quick-error v1.2.2
   Compiling byteorder v1.3.2
   Compiling percent-encoding v2.1.0
   Compiling fnv v1.0.6
   Compiling libflate_lz77 v1.0.0
   Compiling ansi_term v0.11.0
   Compiling pnet v0.26.0
   Compiling adler32 v1.2.0
   Compiling strsim v0.8.0
   Compiling rle-decode-fast v1.0.1
   Compiling vec_map v0.8.1
   Compiling linked-hash-map v0.5.2
   Compiling hex v0.4.2
   Compiling cassowary v0.3.0
   Compiling bandwhich v0.20.0 (/home/giggio/p/bandwhich)
   Compiling thread_local v0.3.6
   Compiling num-traits v0.2.8
   Compiling num-integer v0.1.41
   Compiling heck v0.3.1
   Compiling futures-channel v0.3.1
   Compiling backtrace-sys v0.1.32
   Compiling unicode-bidi v0.3.4
   Compiling pnet_macros_support v0.26.0
   Compiling c2-chacha v0.2.3
   Compiling syntex_pos v0.42.0
   Compiling textwrap v0.11.0
   Compiling lock_api v0.3.4
   Compiling resolv-conf v0.7.0
   Compiling lru-cache v0.1.2
   Compiling log v0.3.9
   Compiling smallvec v0.6.13
   Compiling aho-corasick v0.7.6
   Compiling libflate v1.0.2
   Compiling unicode-normalization v0.1.9
   Compiling syntex_errors v0.42.0
   Compiling iovec v0.1.4
   Compiling net2 v0.2.33
   Compiling parking_lot_core v0.7.2
   Compiling mio v0.7.0
   Compiling signal-hook-registry v1.2.1
   Compiling pnet_sys v0.26.0
   Compiling socket2 v0.3.11
   Compiling time v0.1.42
   Compiling atty v0.2.13
   Compiling hostname v0.3.1
   Compiling quote v1.0.2
error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
   --> /home/giggio/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/socket2-0.3.11/src/sockaddr.rs:156:9
    |
156 |         mem::transmute::<SocketAddrV4, sockaddr_in>(v4);
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: source type: `SocketAddrV4` (48 bits)
    = note: target type: `sockaddr_in` (128 bits)

For more information about this error, try `rustc --explain E0512`.
error: could not compile `socket2` due to previous error
warning: build failed, waiting for other jobs to finish...

[cyqsimon]

Fixed in #273. See also #275.