Fix changelog date.

CHANGELOG.md

@@ -8,7 +8,7 @@ All notable changes to this project will be documented in this file. For info on
 - [CVE-2022-44570] Fix ReDoS in Rack::Utils.get_byte_ranges
 - [CVE-2022-44572] Forbid control characters in attributes (also ReDoS)
 
-## [3.0.4] - 2022-01-17
+## [3.0.4] - 2023-01-17
 
 - `Rack::Request#POST` should consistently raise errors. Cache errors that occur when invoking `Rack::Request#POST` so they can be raised again later. ([#2010](https://github.com/rack/rack/pull/2010), [@ioquatix])
 - Fix `Rack::Lint` error message for `HTTP_CONTENT_TYPE` and `HTTP_CONTENT_LENGTH`. ([#2007](https://github.com/rack/rack/pull/2007), [@byroot](https://github.com/byroot))