Bump retain_mut from 0.1.3 to 0.1.4 (#10021)

Bumps [retain_mut](https://github.com/upsuper/retain_mut) from 0.1.3 to 0.1.4.
- [Release notes](https://github.com/upsuper/retain_mut/releases)
- [Commits](https://github.com/upsuper/retain_mut/commits)

---
updated-dependencies:
- dependency-name: retain_mut
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

substrate/Cargo.lock

@@ -7238,9 +7238,9 @@ dependencies = [
 
 [[package]]
 name = "retain_mut"
-version = "0.1.3"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9c17925a9027d298a4603d286befe3f9dc0e8ed02523141914eb628798d6e5b"
+checksum = "448296241d034b96c11173591deaa1302f2c17b56092106c1f92c1bc0183a8c9"
 
 [[package]]
 name = "ring"

substrate/client/consensus/babe/Cargo.toml

@@ -50,7 +50,7 @@ schnorrkel = { version = "0.9.1", features = ["preaudit_deprecated"] }
 rand = "0.7.2"
 merlin = "2.0"
 derive_more = "0.99.2"
-retain_mut = "0.1.3"
+retain_mut = "0.1.4"
 async-trait = "0.1.50"
 
 [dev-dependencies]

substrate/client/transaction-pool/Cargo.toml

@@ -32,7 +32,7 @@ sp-blockchain = { version = "4.0.0-dev", path = "../../primitives/blockchain" }
 sc-utils = { version = "4.0.0-dev", path = "../utils" }
 serde = { version = "1.0.126", features = ["derive"] }
 linked-hash-map = "0.5.4"
-retain_mut = "0.1.3"
+retain_mut = "0.1.4"
 
 [dev-dependencies]
 assert_matches = "1.3.0"