Bump retain_mut from 0.1.1 to 0.1.2 (#7869)

Bumps [retain_mut](https://github.com/upsuper/retain_mut) from 0.1.1 to 0.1.2.
- [Release notes](https://github.com/upsuper/retain_mut/releases)
- [Commits](https://github.com/upsuper/retain_mut/compare/v0.1.1...v0.1.2)

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

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

substrate/Cargo.lock

@@ -6288,9 +6288,9 @@ dependencies = [
 
 [[package]]
 name = "retain_mut"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e005d658ad26eacc2b6c506dfde519f4e277e328d0eb3379ca61647d70a8f531"
+checksum = "53552c6c49e1e13f1a203ef0080ab3bbef0beb570a528993e83df057a9d9bba1"
 
 [[package]]
 name = "ring"

substrate/client/consensus/babe/Cargo.toml

@@ -51,7 +51,7 @@ rand = "0.7.2"
 merlin = "2.0"
 pdqselect = "0.1.0"
 derive_more = "0.99.2"
-retain_mut = "0.1.1"
+retain_mut = "0.1.2"
 
 [dev-dependencies]
 sp-keyring = { version = "2.0.0", path = "../../../primitives/keyring" }

substrate/client/transaction-pool/graph/Cargo.toml

@@ -27,7 +27,7 @@ sp-runtime = { version = "2.0.0", path = "../../../primitives/runtime" }
 sp-transaction-pool = { version = "2.0.0", path = "../../../primitives/transaction-pool" }
 parity-util-mem = { version = "0.8.0", default-features = false, features = ["primitive-types"] }
 linked-hash-map = "0.5.2"
-retain_mut = "0.1.1"
+retain_mut = "0.1.2"
 
 [dev-dependencies]
 assert_matches = "1.3.0"