Bump futures-util from 0.3.26 to 0.3.28 (solana-labs#31503)

Bumps [futures-util](https://github.com/rust-lang/futures-rs) from 0.3.26 to 0.3.28.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](rust-lang/futures-rs@0.3.26...0.3.28)

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

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

Cargo.toml

@@ -190,7 +190,7 @@ flate2 = "1.0.26"
 fnv = "1.0.7"
 fs_extra = "1.3.0"
 futures = "0.3.24"
-futures-util = "0.3.26"
+futures-util = "0.3.28"
 gag = "1.0.0"
 generic-array = { version = "0.14.7", default-features = false }
 gethostname = "0.2.3"