Revert "Bump cargo_toml from 0.20.4 to 0.22.0"

This reverts commit 0829b83.

Author: Jethro Beekman

Cargo.lock

@@ -15,7 +15,7 @@ categories = ["command-line-utilities"]
 
 [dependencies]
 anyhow = "1.0"
-cargo_toml = "0.22.0"
+cargo_toml = "0.20.4"
 clap = "2.34"
 elf = "0.0.10"
 env_logger = "0.9"