chore(shard.lock): bump ssh2 version

Author: stakach

drivers/cisco/room_kit.cr

@@ -202,7 +202,7 @@ class Cisco::RoomKit < PlaceOS::Driver
   command({"Video Input SetMainVideoSource" => :camera_select},
     connector_id_: 1..3,  # Source can either be specified as the
     layout_: VideoLayout, # physical connector...
-    source_id_: 1..3)     # ...or the logical source ID.
+    source_id_: 1..3)     # ...or the logical source ID
 
   enum LayoutFamily
     Auto

shard.lock

@@ -343,7 +343,7 @@ shards:
 
   ssh2:
     git: https://github.com/spider-gazelle/ssh2.cr.git
-    version: 1.6.1
+    version: 1.7.0
 
   stomp:
     git: https://github.com/spider-gazelle/stomp.git