chore: disable wrong self convention until clippy is fixed

Fixed in rust-lang/rust-clippy#6818 but
requires a new clippy release.

Author: anthraxx

src/config.rs

@@ -1,3 +1,4 @@
+#![allow(clippy::wrong_self_convention)]
 use crate::args::Args;
 use crate::errors::*;
 use crate::git::GitConfigBuilder;