v0.11.1 : Fix discriminated union being whitespace sensitive

What's Changed

• Update smithy-aws-traits, smithy-build, ... to 1.16.3 by @scala-steward in #50
• Update jsoniter-scala-core to 2.12.1 by @scala-steward in #51
• Allow decoding of discriminated unions with whitespace by @kubukoz in #49

Full Changelog: v0.11.0...v0.11.1