Bump version to 4.2.1 (#621)

- Version bump to 4.2.1
- Updated changelog with FlatStore improvements

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Claude <[email protected]>

Author: VedranZoricic

changes.txt

@@ -1,3 +1,7 @@
+4.2.1
+- Fixed FlatStore to skip hash values when building API request payloads
+- Removed hash validation on FlatStore reads to allow for custom objects
+
 4.1.3
 - Updated ReadMe with more errors.
 - Fixed issue where paginated requests could only be iterated through once.

lib/intercom/version.rb

@@ -1,3 +1,3 @@
 module Intercom #:nodoc:
-  VERSION = "4.2.0"
+  VERSION = "4.2.1"
 end