Bump lexxy from 0.9.0.beta to 0.9.1.beta (#2796)

* Bump lexxy from 0.9.0.beta to 0.9.1.beta

Bumps [lexxy](https://github.com/basecamp/lexxy) from 0.9.0.beta to 0.9.1.beta.
- [Release notes](https://github.com/basecamp/lexxy/releases)
- [Commits](https://github.com/basecamp/lexxy/compare/v0.9.0.beta...v0.9.1.beta)

---
updated-dependencies:
- dependency-name: lexxy
  dependency-version: 0.9.1.beta
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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* Sync Gemfile.saas.lock

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Gemfile

@@ -27,7 +27,7 @@ gem "geared_pagination", "~> 1.2"
 gem "rqrcode"
 gem "rouge"
 gem "jbuilder"
-gem "lexxy", "0.9.0.beta"
+gem "lexxy", "0.9.2.beta"
 gem "image_processing", "~> 1.14"
 gem "platform_agent"
 gem "aws-sdk-s3", require: false