downgrade toml crate to make ci green

Signed-off-by: T. Chen <[email protected]>

Author: up9cloud

Cargo.toml

@@ -31,7 +31,7 @@ serde = "1.0.8"
 nom = "7"
 
 async-trait = { version = "0.1.50", optional = true }
-toml = { version = "0.7", optional = true }
+toml = { version = "0.7.7", optional = true }
 serde_json = { version = "1.0.2", optional = true }
 yaml-rust = { version = "0.4", optional = true }
 rust-ini = { version = "0.19", optional = true }