Updated CHANGELOG

Author: ancwrd1

CHANGELOG.md

@@ -1,3 +1,6 @@
+## next (unreleased)
+- Fixed a problem with snx-rs-gui lock file in the multi-user environments
+
 ## v3.1.0 (2025-02-21)
 - Added `password-factor=N` option to determine which authentication factor is the password. Default is 1 (first).
 - Added `set-routing-domains=true|false` option to treat the received search domains as [routing domains](https://systemd.io/RESOLVED-VPNS/).