translations: Add missing translation for approach server

This translation was already referred to in several other locations but
did not have an entry defined for it.

Author: csbisa

resources/public/i18n/en.ftl

@@ -409,6 +409,8 @@ game_agenda-count-with-req = {$agenda-point ->
 
 game_approach-ice = Approach ice
 
+game_approach-server = Approach server
+
 game_archives = Archives ({$faceup} ↑ {$facedown} ↓)
 
 game_attempt-reconnect = Attempt reconnect

src/cljs/nr/gameboard/board.cljs

@@ -1538,6 +1538,7 @@
   (case phase
     "initiation" (tr [:game_initiation "Initiation"])
     "approach-ice" (tr [:game_approach-ice "Approach ice"])
+    "approach-server" (tr [:game_approach-server "Approach server"])
     "encounter-ice" (tr [:game_encounter-ice "Encounter ice"])
     "movement" (tr [:game_movement "Movement"])
     "success" (tr [:game_success "Success"])