cargo deny #7

Hello, it seems failure was depracated a while ago and had unresolved security issues.
Would it be possible to update the dependencies?

Crate: failure
Version: 0.1.8
Warning: unmaintained
Title: failure is officially deprecated/unmaintained
Date: 2020-05-02
ID: RUSTSEC-2020-0036
URL: https://rustsec.org/advisories/RUSTSEC-2020-0036
Severity: 9.8 (critical)

host:~/RustroverProjects/enum-utils-as-str$ cargo tree -i failure
failure v0.1.8
└── enum-utils v0.1.2 (proc-macro)
[dev-dependencies]
└── enum_utils_as_str v0.1.0 (proc-macro) (/home/dante/RustroverProjects/enum-utils-as-str)