Release 1.21.0b2

What's Changed

• feat: decorator support for Kafka extension by Vivek Jilla (@vivekjilla) in #234
• refactor: unique function name validation by hallvictoria in #236
• build: update Python Library Version to 1.21.0b2 by hallvictoria in #237

Worker / Runtime Version

• Worker Version: 4.31.0
• Runtime Version: -

New Contributors

• Vivek Jilla (@vivekjilla) made their first contribution in #234

Full Changelog: 1.21.0b1...1.21.0b2