Add some missing links in CHANGELOG.md

Signed-off-by: Soblow "Opale" Xaselgio <[email protected]>

Author: Soblow

CHANGELOG.md

@@ -69,3 +69,6 @@ in the pool should be checked if they are still valid
 [0.3.0]: https://github.com/weiznich/diesel_async/compare/v0.2.0...v0.3.0
 [0.3.1]: https://github.com/weiznich/diesel_async/compare/v0.3.0...v0.3.1
 [0.3.2]: https://github.com/weiznich/diesel_async/compare/v0.3.1...v0.3.2
+[0.4.0]: https://github.com/weiznich/diesel_async/compare/v0.3.2...v0.4.0
+[0.4.1]: https://github.com/weiznich/diesel_async/compare/v0.4.0...v0.4.1
+[Unreleased]: https://github.com/weiznich/diesel_async/compare/v0.4.1...main