chore(changelog): update changelog for v4.1.0 (dgraph-io#1918)

Update changelog for v4.1.0.

CHANGELOG.md

@@ -3,6 +3,45 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
+## [4.1.0] - 2023-03-30
+
+This release adds support for incremental stream writer.  We also do some cleanup in the docs 
+and resolve some CI issues for community PR's.  We resolve high and medium CVE's and fix
+[#1833](https://github.com/dgraph-io/badger/issues/1833).
+
+### Features
+- feat(stream): add support for incremental stream writer (#1722) (#1874)
+
+### Fixes
+- chore: upgrade xxhash from v1.1.0 to v2.1.2 (#1910) (fixes [#1833](https://github.com/dgraph-io/badger/issues/1833))
+
+### Security
+- chore(deps): bump golang.org/x/net from 0.0.0-20201021035429-f5854403a974 to 0.7.0 (#1885)
+
+### CVE's
+
+- [CVE-2021-31525](https://github.com/dgraph-io/badger/security/dependabot/7)
+- [CVE-2022-41723](https://github.com/dgraph-io/badger/security/dependabot/4)
+- [CVE-2022-27664](https://github.com/dgraph-io/badger/security/dependabot/5)
+- [CVE-2021-33194](https://github.com/dgraph-io/badger/security/dependabot/9)
+- [CVE-2022-41723](https://github.com/dgraph-io/badger/security/dependabot/13)
+- [CVE-2021-33194](https://github.com/dgraph-io/badger/security/dependabot/16)
+- [CVE-2021-38561](https://github.com/dgraph-io/badger/security/dependabot/8)
+
+### Chores
+
+- fix(docs): update README (#1915)
+- cleanup sstable file after tests (#1912)
+- chore(ci): add dgraph regression tests (#1908)
+- docs: fix the default value in docs (#1909)
+- chore: update URL for unsupported manifest version error (#1905)
+- docs(README): add raft-badger to projects using badger (#1902)
+- sync the docs with README with projects using badger (#1903)
+- fix: update code comments for WithNumCompactors (#1900)
+- docs: add loggie to projects using badger (#1882)
+- chore(memtable): refactor code for memtable flush (#1866)
+- resolve coveralls issue for community PR's (#1892, #1894, #1896)
+
 ## [4.0.1] - 2023-02-28
 
 We issue a follow up release in order to resolve a bug in subscriber.  We also generate updated protobufs for Badger v4.