Merge pull request #6750 from microsoft/release/one-twentyeight-zero

chore: bumps version for release of 1.28.0

Author: baywet

CHANGELOG.md

@@ -13,6 +13,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+## [1.28.0] - 2025-07-11
+
+### Added
+
+### Changed
+
 - Removed incomplete Swift generation.
 - Removed CLI generation ability. [microsoft/kiota-cli-commons#248](https://github.com/microsoft/kiota-cli-commons/issues/248)
 - Fixed a bug where union of primitive types collection would not compile in dotnet. [#6635](https://github.com/microsoft/kiota/issues/6635)
@@ -1669,3 +1675,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Initial GitHub release
+