fix: update release date

Author: ppkarwasz

src/changelog/2.25.4/.release.xml

@@ -18,4 +18,4 @@
 <release xmlns="https://logging.apache.org/xml/ns"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="https://logging.apache.org/xml/ns https://logging.apache.org/xml/ns/log4j-changelog-0.xsd"
-         date="2026-03-25" version="2.25.4"/>
+         date="2026-03-28" version="2.25.4"/>