software/theia: set security.workspace.trust.startupPrompt to once

no need to prompt everytime. In the context of slapos theia, I guess we
can say that user trust the workspace

software/theia/buildout.hash.cfg

@@ -15,7 +15,7 @@
 
 [instance-theia]
 _update_hash_filename_ = instance-theia.cfg.jinja.in
-md5sum = 00d15432c1486376d8ba7d0f5ec63c33
+md5sum = 59d56d6a72c85f1631a1a87bb51af765
 
 [instance]
 _update_hash_filename_ = instance.cfg.in

software/theia/instance-theia.cfg.jinja.in

@@ -728,7 +728,8 @@ template =
       "$${directory:runner}/**":true,
       "$${directory:project}/runner/**":true
     },
-    "git.terminalAuthentication": false
+    "git.terminalAuthentication": false,
+    "security.workspace.trust.startupPrompt": "once"
   }
 
 [runner-link]