Cargo.lock: bump dependencies (#755)

Updates the following dependencies:

    $ cargo update
    Updating crates.io index
    Updating byteorder v1.4.3 -> v1.5.0
    Updating cc v1.0.79 -> v1.0.83
    Updating const-oid v0.9.2 -> v0.9.5
    Updating cpufeatures v0.2.6 -> v0.2.11
    Updating crypto-bigint v0.5.1 -> v0.5.4
    Updating curve25519-dalek v4.0.0 -> v4.1.1
    Updating curve25519-dalek-derive v0.1.0 -> v0.1.1
    Updating ecdsa v0.16.2 -> v0.16.8
    Updating ed25519 v2.2.0 -> v2.2.3
    Updating ed25519-dalek v2.0.0 -> v2.1.0
    Updating elliptic-curve v0.13.6 -> v0.13.7
    Updating fiat-crypto v0.1.20 -> v0.2.4
    Updating getrandom v0.2.8 -> v0.2.11
    Updating libc v0.2.140 -> v0.2.150
    Updating libm v0.2.6 -> v0.2.8
    Updating num-bigint-dig v0.8.2 -> v0.8.4
    Updating p256 v0.13.0 -> v0.13.2
    Updating platforms v3.0.2 -> v3.2.0
    Updating primeorder v0.13.0 -> v0.13.6
    Updating proc-macro2 v1.0.56 -> v1.0.69
    Updating quote v1.0.26 -> v1.0.33
    Updating ring v0.17.2 -> v0.17.5
    Updating sec1 v0.7.1 -> v0.7.3
    Updating semver v1.0.17 -> v1.0.20
    Updating serde v1.0.166 -> v1.0.192
      Adding serde_derive v1.0.192
    Updating signature v2.0.0 -> v2.1.0
    Updating smallvec v1.10.0 -> v1.11.2
    Updating syn v2.0.16 -> v2.0.39
    Updating typenum v1.16.0 -> v1.17.0
    Updating unicode-ident v1.0.8 -> v1.0.12
    Updating zeroize v1.6.0 -> v1.6.1