chore: bump retain_mut from 0.1.3 to 0.1.4 (#20277)

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>

core/Cargo.toml

@@ -31,7 +31,7 @@ rand = "0.7.0"
 rand_chacha = "0.2.2"
 raptorq = "1.6.4"
 rayon = "1.5.1"
-retain_mut = "0.1.3"
+retain_mut = "0.1.4"
 serde = "1.0.130"
 serde_derive = "1.0.103"
 solana-account-decoder = { path = "../account-decoder", version = "=1.8.0" }