update changelog

CHANGELOG.md

@@ -7,8 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ## [9.0.0]
-### Uncategorized
-- Update eth-json-rpc and metamask packages ([#95](https://github.com/MetaMask/eth-json-rpc-infura/pull/95))
+### Changed
+- **BREAKING:** Minimum Node.js version is now v16 ([#91](https://github.com/MetaMask/eth-json-rpc-infura/pull/91))
+- **BREAKING:** Update dependencies ([#95](https://github.com/MetaMask/eth-json-rpc-infura/pull/95))
+  - Bump `@metamask/eth-json-rpc-provider` from `^1.0.0` to `^2.1.0`
+  - Bump `@metamask/utils` from `^5.0.1` to `^8.1.0`
+  - Update from `eth-rpc-errors`@`^4.0.3` to `@metamask/rpc-errors`@`^6.0.0`
+  - Update from `json-rpc-engine`@`^6.1.0` to `@metamask/json-rpc-engine`@`^7.1.0`
 
 ## [8.1.2]
 ### Changed