Update CHANGELOG.md to include entry for version 5.6.13 and note the update of sdk-webview-provider to LTS

Author: arhtudormorar

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [[5.6.13](https://github.com/multiversx/mx-sdk-dapp/pull/1721)] - 2026-02-06
+
+- [Update sdk-webview-provider to LTS](https://github.com/multiversx/mx-sdk-dapp/pull/1721)
+
 ## [[5.6.12](https://github.com/multiversx/mx-sdk-dapp/pull/1720)] - 2026-02-04
 
 - [TS definitions missing. Republish](https://github.com/multiversx/mx-sdk-dapp/pull/1720)