Bot Framework JS SDK 4.21.1

This is the November 2023 Bot Framework JS SDK patch release. This release contains security related updates.

What's Changed

• fix: [#4545] Zod package - botbuilder-dialogs by @sw-joelmut in #4563
• fix: [#4545] Zod package - botbuilder by @sw-joelmut in #4561
• fix: [#4545] Zod package - botbuilder-core by @sw-joelmut in #4562
• chore: bump browserify-sign from 4.2.1 to 4.2.2 by @dependabot in #4553
• chore: bump browserify-sign from 4.2.1 to 4.2.2 in /testing/browser-functional/browser-echo-bot by @dependabot in #4554
• bump: Update babel related dependencies by @sw-joelmut in #4556

Full Changelog: 4.21.0...4.21.1