Bump rand from 0.8.2 to 0.8.3 (#2335)

Bumps [rand](https://github.com/rust-random/rand) from 0.8.2 to 0.8.3.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-random/rand/commits)

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

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

polkadot/node/network/availability-recovery/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [dependencies]
 futures = "0.3.12"
 lru = "0.6.1"
-rand = "0.7.3"
+rand = "0.8.3"
 thiserror = "1.0.21"
 tracing = "0.1.22"
 tracing-futures = "0.2.4"