fix: opt out of the SSH hardening inherited from napalm-linux

OpenMediaVault generates sshd_config from its own database; a drop-in
netOrk wrote would be dropped by the next apply of the SSH settings
without a word. harden_ssh_server = None makes netOrk's capability probe
answer no.

Requires napalm-linux 0.5.0; bumps to 0.1.1. NetOrk/netork#1027

napalm_openmediavault/openmediavault.py

@@ -65,6 +65,11 @@ class OpenMediaVaultDriver(StorageDriver, LinuxDriver):
         FingerprintRule("openmediavault", weight=9.0, mandatory=True),
     ]
 
+    #: OMV generates sshd_config from its own database; a drop-in netOrk wrote
+    #: would be dropped on the next apply of the SSH settings. Inherited from
+    #: napalm-linux, so opted out here (NetOrk/netork#1027).
+    harden_ssh_server = None  # type: ignore[assignment]
+
     # ── Facts override ─────────────────────────────────────────────────────────
 
     def get_facts(self) -> dict[str, Any]: