fix: rename get_users to get_os_users for napalm-device-types 4.7

napalm-device-types 4.7 renamed OSDriver.get_users to get_os_users:
NAPALM's own get_users has another shape and a stub on every driver, so
hasattr could not tell the two apart. BsdDriver now implements
get_os_users with the same return shape and leaves NAPALM's get_users
alone.

Require napalm-device-types>=4.7.1 and bump the version to 0.2.0.

CHANGELOG.md

@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.0] - 2026-10-13
+
+### Changed
+- `get_users` is now `get_os_users`, as napalm-device-types 4.7 names it on
+  `OSDriver`; the return shape is unchanged. NAPALM's own `get_users` has
+  another shape and a stub on every driver, so a poll asking `hasattr` could
+  not tell the two apart. Requires napalm-device-types 4.7.1 or later.
+
+## [0.1.0]
+
 ### Added
 - `FreeBSDDriver` (`freebsd`) and `OpenBSDDriver` (`openbsd`) on a shared
   `BsdDriver`: SSH over exec channels (no PTY, real exit codes), root through