build(deps): bump twilio-ruby from 6.5.0 to 6.6.0

Bumps [twilio-ruby](https://github.com/twilio/twilio-ruby) from 6.5.0 to 6.6.0.
- [Release notes](https://github.com/twilio/twilio-ruby/releases)
- [Changelog](https://github.com/twilio/twilio-ruby/blob/main/CHANGES.md)
- [Commits](twilio/twilio-ruby@6.5.0...6.6.0)

---
updated-dependencies:
- dependency-name: twilio-ruby
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -441,7 +441,7 @@ GEM
     timeout (0.4.0)
     traceroute (0.8.1)
       rails (>= 3.0.0)
-    twilio-ruby (6.5.0)
+    twilio-ruby (6.6.0)
       faraday (>= 0.9, < 3.0)
       jwt (>= 1.5, < 3.0)
       nokogiri (>= 1.6, < 2.0)