Fix dates in 4.2.3 release announcement

Author: swt2c

posts/news/2025-04-09-wxpython-4.2.3-release.md

@@ -1,7 +1,7 @@
 <!--
 .. title: wxPython 4.2.3 Released
-.. slug: 2024-04-09-wxpython-423-release
-.. date: 2024-04-09
+.. slug: 2025-04-09-wxpython-423-release
+.. date: 2025-04-09
 .. tags: Development, Release, Phoenix
 .. category: News
 .. link: