chore: release 4.3.0 (#221)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

.github/.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "4.2.2"
+  ".": "4.3.0"
 }

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [4.3.0](https://github.com/pm7y/AzureEventGridSimulator/compare/4.2.2...4.3.0) (2025-12-17)
+
+
+### Features
+
+* Add retry & dead letter support ([#220](https://github.com/pm7y/AzureEventGridSimulator/issues/220)) ([bff1bf1](https://github.com/pm7y/AzureEventGridSimulator/commit/bff1bf1fb32941840645061111736b9a56aa4d68))
+
 ## [4.2.2](https://github.com/pm7y/AzureEventGridSimulator/compare/4.2.1...4.2.2) (2025-12-17)