Update CHANGELOG for version 2.0.4

Author: witmicko

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.0.4]
+
+### Changed
+
+- Updated language detector to remove Javascript as fallback default language
+
 ## [2.0.3]
 
 ### Added
@@ -50,7 +56,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release of this action ([#29](https://github.com/MetaMask/action-security-code-scanner/pull/29))
 
-[Unreleased]: https://github.com/metamask/action-security-code-scanner/compare/v2.0.3...HEAD
+[Unreleased]: https://github.com/metamask/action-security-code-scanner/compare/v2.0.4...HEAD
+[2.0.4]: https://github.com/metamask/action-security-code-scanner/compare/v2.0.3...v2.0.4
 [2.0.3]: https://github.com/metamask/action-security-code-scanner/compare/v2.0.1...v2.0.3
 [2.0.1]: https://github.com/metamask/action-security-code-scanner/compare/v2.0.0...v2.0.1
 [2.0.0]: https://github.com/metamask/action-security-code-scanner/compare/v1.1.0...v2.0.0