cargo: Update all minor dependencies

Following dependencies were change:

,----
|     Updating crates.io index
|     Updating addr2line v0.12.2 -> v0.17.0
|       Adding adler v1.0.2
|     Removing adler32 v1.1.0
|     Updating autocfg v1.0.1 -> v1.1.0
|     Updating backtrace v0.3.49 -> v0.3.64
|     Updating bitflags v1.2.1 -> v1.3.2
|     Updating cc v1.0.56 -> v1.0.73
|     Removing cfg-if v0.1.10
|     Updating error-chain v0.12.2 -> v0.12.4
|     Updating gimli v0.21.0 -> v0.26.1
|     Updating hermit-abi v0.1.14 -> v0.1.19
|     Updating itoa v0.4.6 -> v1.0.1
|     Updating libc v0.2.104 -> v0.2.120
|       Adding memchr v2.4.1
|     Updating memoffset v0.6.4 -> v0.6.5
|     Updating miniz_oxide v0.3.7 -> v0.4.4
|     Updating nix v0.22.1 -> v0.22.3
|     Updating object v0.20.0 -> v0.27.1
|     Updating rustc-demangle v0.1.16 -> v0.1.21
|     Updating ryu v1.0.5 -> v1.0.9
|     Updating serde v1.0.114 -> v1.0.136
|     Updating serde_json v1.0.56 -> v1.0.79
|     Updating toml v0.5.6 -> v0.5.8
|     Updating version_check v0.9.2 -> v0.9.4
`----

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>