Bump gibbon from 3.3.4 to 3.4.0 (#13064)

Bumps [gibbon](https://github.com/amro/gibbon) from 3.3.4 to 3.4.0.
- [Release notes](https://github.com/amro/gibbon/releases)
- [Changelog](https://github.com/amro/gibbon/blob/master/CHANGELOG.md)
- [Commits](https://github.com/amro/gibbon/compare/v3.3.4...v3.4.0)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile

@@ -41,7 +41,7 @@ gem "flipper-ui", "~> 0.20.4"
 gem "fog-aws", "~> 3.9" # 'fog' gem to support Amazon Web Services
 gem "front_matter_parser", "~> 1.0" # Parse a front matter from syntactically correct strings or files
 gem "gemoji", "~> 4.0.0.rc2" # Character information and metadata for standard and custom emoji
-gem "gibbon", "~> 3.3" # API wrapper for MailChimp's API
+gem "gibbon", "~> 3.4" # API wrapper for MailChimp's API
 gem "honeybadger", "~> 4.8" # Used for tracking application errors
 gem "honeycomb-beeline", "~> 2.4.0" # Monitoring and Observability gem
 gem "html_truncator", "~> 0.4" # Truncate an HTML string properly

Gemfile.lock

@@ -339,7 +339,7 @@ GEM
     geocoder (1.6.5)
     get_process_mem (0.2.7)
       ffi (~> 1.0)
-    gibbon (3.3.4)
+    gibbon (3.4.0)
       faraday (>= 0.16.0)
       multi_json (>= 1.11.0)
     globalid (0.4.2)
@@ -927,7 +927,7 @@ DEPENDENCIES
   fog-aws (~> 3.9)
   front_matter_parser (~> 1.0)
   gemoji (~> 4.0.0.rc2)
-  gibbon (~> 3.3)
+  gibbon (~> 3.4)
   guard (~> 2.16)
   guard-livereload (~> 2.5)
   guard-rspec (~> 4.7)