Merge branch 'next-release' into 'main'

chore(release): prepare for 0.4.0

See merge request unboundsoftware/auth0mock!217

.version

@@ -1 +1 @@
-{"version":"0.3.0"}
+{"version":"0.4.0"}

CHANGELOG.md

@@ -1,3 +1,8 @@
+## [0.4.0] - 2025-12-29
+
+### 🚀 Features
+
+- *(session-cleanup)* Implement session expiration cleanup
 ## [0.3.0] - 2025-12-28
 
 ### 🚀 Features