Prepare for Release 2.3.3

[github-actions]

Prepare for Release 2.3.3

SDK Release Checklist

• CHANGELOG.md updated (Unreleased section moved under the new version)
• Version bumped in package.json
• README.md reviewed (if needed)
• All tests passing
• Documentation updated (if needed) https://github.com/Iterable/iterable-docs/pull/1591

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.32%. Comparing base (ffd4eac) to head (876aac7).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #589   +/-   ##
=======================================
  Coverage   75.32%   75.32%           
=======================================
  Files          57       57           
  Lines        2752     2752           
  Branches      823      823           
=======================================
  Hits         2073     2073           
  Misses        639      639           
  Partials       40       40           

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