Copilot: Fix Qbs build

Change-Id: Id5e40971981846867fd3e16a5a255d553a15610c
Reviewed-by: hjk <hjk@qt.io>

src/plugins/copilot/copilot.qbs

@@ -4,6 +4,8 @@ QtcPlugin {
     name: "Copilot"
 
     Depends { name: "Core" }
+    Depends { name: "LanguageClient" }
+    Depends { name: "TextEditor" }
     Depends { name: "Qt"; submodules: ["widgets", "xml", "network"] }
 
     files: [