prep for v4.2.2 release (#451)

Author: ajfriend

Diff for: CHANGELOG.md

@@ -18,6 +18,10 @@ avoid adding features or APIs which do not map onto the
 
 None.
 
+## [4.2.2] - 2025-03-10
+
+- Update h3lib to v4.2.1. (#450)
+
 ## [4.2.1] - 2025-01-31
 
 - Correct pyproject.toml links for PyPI (#441)

Diff for: pyproject.toml

@@ -4,7 +4,7 @@ build-backend = 'scikit_build_core.build'
 
 [project]
 name = 'h3'
-version = '4.2.1'
+version = '4.2.2'
 description = "Uber's hierarchical hexagonal geospatial indexing system"
 readme = 'readme.md'
 license = {file = 'LICENSE'}