Update some dependencies: (#4207)

- derive_more 0.15 -> 0.99
- strum 0.15 -> 0.16
- slog_derive 0.1 -> 0.2

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

substrate/primitives/consensus/common/src/error.rs

@@ -67,9 +67,11 @@ pub enum Error {
 	Other(Box<dyn error::Error + Send>),
 	/// Error from the client while importing
 	#[display(fmt="Import failed: {}", _0)]
+	#[from(ignore)]
 	ClientImport(String),
 	/// Error from the client while importing
 	#[display(fmt="Chain lookup failed: {}", _0)]
+	#[from(ignore)]
 	ChainLookup(String),
 }