Release 1.21.0b1

What's Changed

• update to 1ES PT by @hallvictoria in #221
• 1ES build fixes by @hallvictoria in #227
• Added eventgrid connection property by @gavin-aguiar in #229
• Changed builds to use linux image by @hallvictoria in #231
• Removed codeql.yml by @hallvictoria in #228
• chore: code clean up by @hallvictoria in #232
• fix: asgi/wsgifunctionapps to extend bindingapi/settingapi by @YunchuWang in #209
• fix: small memory leak by @hallvictoria in #223
• fix: enforcing unique function names by @hallvictoria in #216
• build: update Python Library Version to 1.21.0b1 by @hallvictoria in #235

Worker / Runtime Version

• Worker Version: 4.31.0
• Runtime Version: -

Full Changelog: 1.20.0...1.21.0b1