Bump hex-literal from 0.3.4 to 0.4.0

Bumps [hex-literal](https://github.com/RustCrypto/utils) from 0.3.4 to 0.4.0.
- [Release notes](https://github.com/RustCrypto/utils/releases)
- [Commits](https://github.com/RustCrypto/utils/compare/hex-literal-v0.3.4...hex-literal-v0.4.0)

---
updated-dependencies:
- dependency-name: hex-literal
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

bridges/bin/millau/runtime/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/paritytech/parity-bridges-common/"
 license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 
 [dependencies]
-hex-literal = "0.3"
+hex-literal = "0.4"
 codec = { package = "parity-scale-codec", version = "3.1.5", default-features = false, features = ["derive"] }
 scale-info = { version = "2.1.1", default-features = false, features = ["derive"] }
 

bridges/bin/rialto-parachain/runtime/Cargo.toml

@@ -11,7 +11,7 @@ substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", bran
 
 [dependencies]
 codec = { package = 'parity-scale-codec', version = '3.1.5', default-features = false, features = ['derive']}
-hex-literal = "0.3"
+hex-literal = "0.4"
 scale-info = { version = "2.1.1", default-features = false, features = ["derive"] }
 
 # Bridge depedencies

bridges/primitives/header-chain/Cargo.toml

@@ -27,7 +27,7 @@ sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", d
 [dev-dependencies]
 bp-test-utils = { path = "../test-utils" }
 hex = "0.4"
-hex-literal = "0.3"
+hex-literal = "0.4"
 
 [features]
 default = ["std"]

bridges/primitives/messages/Cargo.toml

@@ -23,7 +23,7 @@ sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", d
 
 [dev-dependencies]
 hex = "0.4"
-hex-literal = "0.3"
+hex-literal = "0.4"
 
 [features]
 default = ["std"]

bridges/primitives/relayers/Cargo.toml

@@ -23,7 +23,7 @@ sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", d
 
 [dev-dependencies]
 hex = "0.4"
-hex-literal = "0.3"
+hex-literal = "0.4"
 
 [features]
 default = ["std"]

bridges/primitives/runtime/Cargo.toml

@@ -27,7 +27,7 @@ sp-trie = { git = "https://github.com/paritytech/substrate", branch = "master",
 trie-db = { version = "0.27.1", default-features = false }
 
 [dev-dependencies]
-hex-literal = "0.3"
+hex-literal = "0.4"
 
 [features]
 default = ["std"]

bridges/relays/bin-substrate/Cargo.toml

@@ -67,7 +67,7 @@ xcm = { git = "https://github.com/paritytech/polkadot", branch = "master", defau
 
 [dev-dependencies]
 bp-test-utils = { path = "../../primitives/test-utils" }
-hex-literal = "0.3"
+hex-literal = "0.4"
 sp-keyring = { git = "https://github.com/paritytech/substrate", branch = "master" }
 tempfile = "3.5"
 finality-grandpa = { version = "0.16.2" }