0.20.2

• Adjust handling of Elicit Intent response to account for no interpretations from Lex. Precreate mp3 audio files needed for voice response as default un-authenticated role can't use Polly to create these responses dynamically.
• Dependency upgrades to fix critical vulnerabilities.

What's Changed

• Bump browserify-sign from 4.2.1 to 4.2.2 by @dependabot in #575
• Bump browserify-sign from 4.2.1 to 4.2.2 in /lex-web-ui by @dependabot in #574
• Fix/voice response elicit intent by @bobpskier in #579

Full Changelog: v0.20.1...v0.20.2