Bump rayon from 1.1.0 to 1.2.0 (#5758)

Bumps [rayon](https://github.com/rayon-rs/rayon) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/rayon-rs/rayon/releases)
- [Changelog](https://github.com/rayon-rs/rayon/blob/master/RELEASES.md)
- [Commits](https://github.com/rayon-rs/rayon/compare/rayon-core-v1.1.0...v1.2.0)

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

banking_bench/Cargo.toml

@@ -9,7 +9,7 @@ homepage = "https://solana.com/"
 
 [dependencies]
 log = "0.4.6"
-rayon = "1.1.0"
+rayon = "1.2.0"
 solana-core = { path = "../core", version = "0.19.0-pre0" }
 solana-logger = { path = "../logger", version = "0.19.0-pre0" }
 solana-runtime = { path = "../runtime", version = "0.19.0-pre0" }