Add changelog for 2.2.0

CHANGELOG.md

+## 2.2.0 (2025-04-29)
+
+### Fixed (1 change)
+
+- [Fix passing `-var-file` to commands that don't support it prior to OpenTofu 1.8.0](https://gitlab.com/components/opentofu/-/commit/6a0caec12793afc47bf71278a252258177acbc83) by @markuest ([merge request](https://gitlab.com/components/opentofu/-/merge_requests/276))
+
+### Development (1 change)
+
+- [Make release script more robust](https://gitlab.com/components/opentofu/-/commit/e78d730e7f8e950990b9503ea8b1ae350085b3c2) ([merge request](https://gitlab.com/components/opentofu/-/merge_requests/275))
+
 ## 2.1.1 (2025-04-25)
 
 ### Development (1 change)