message: Update version to 0.50.0.
diff: @@ -9,7 +9,7 @@ rust.msrv=1.61.0
  org.gradle.jvmargs=-Xmx1024M
  # Version number to use for the generated runtime crates
  -smithy.rs.runtime.crate.version=0.49.0
  +smithy.rs.runtime.crate.version=0.50.0
  kotlin.code.style=official
  