Prepare v8.1.1 release (#288)

Author: kkozik-amplify

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## \[Unreleased\]
 
+- Nothing yet.
+
+## \[8.1.1\] - 2026-04-07
+
 ### Added
 
 - v7-to-v8 migration guide and absolute GitHub links in README docs table. ([#287](https://github.com/amplify-education/python-hcl2/pull/287))