Update changelog for v2.9.0 (#720)

Co-authored-by: gmalouf <[email protected]>

Author: github-actions[bot]

CHANGELOG.md

@@ -1,2 +1,26 @@
 # Changelog
-All notable changes to this project will be documented in this file.
+
+All notable changes to this project will be documented in this file.
+
+## v2.9.0 - 2025-05-22
+
+<!-- Release notes generated using configuration in .github/release.yml at main -->
+### What's Changed
+
+Support for API changes in go-algorand v4.1.x.
+
+#### Enhancements
+
+* Release: Generate CHANGELOG entry off of Github release notes by @gmalouf in https://github.com/algorand/go-algorand-sdk/pull/689
+* Build: Update Box API Pagination-dependent integration tests. by @gmalouf in https://github.com/algorand/go-algorand-sdk/pull/704
+* build(deps): bump golang.org/x/crypto from 0.31.0 to 0.35.0 by @dependabot in https://github.com/algorand/go-algorand-sdk/pull/703
+* Txns: App versioning by @jannotti in https://github.com/algorand/go-algorand-sdk/pull/706
+* Chore: Remove unneeded allocbounds from SDK by @jannotti in https://github.com/algorand/go-algorand-sdk/pull/717
+
+#### Other
+
+* Regenerate code with the latest specification file (dc38f643) by @github-actions in https://github.com/algorand/go-algorand-sdk/pull/688
+* Regenerate code with the latest specification file (a356f643) by @github-actions in https://github.com/algorand/go-algorand-sdk/pull/716
+* Regenerate code with the latest specification file (ad67b6e3) by @github-actions in https://github.com/algorand/go-algorand-sdk/pull/718
+
+**Full Changelog**: https://github.com/algorand/go-algorand-sdk/compare/v2.8.0...v2.9.0