Bump bincode from 1.1.4 to 1.2.0 (#6065)

Bumps [bincode](https://github.com/servo/bincode) from 1.1.4 to 1.2.0.
- [Release notes](https://github.com/servo/bincode/releases)
- [Commits](https://github.com/servo/bincode/compare/v1.1.4...v1.2.0)

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

sdk/Cargo.toml

@@ -29,7 +29,7 @@ default = [
 
 [dependencies]
 assert_matches = { version = "1.3.0", optional = true }
-bincode = "1.1.4"
+bincode = "1.2.0"
 bs58 = "0.3.0"
 byteorder = { version = "1.3.2", optional = true }
 chrono = { version = "0.4.9", features = ["serde"], optional = true }