Updating server dependancies (#5249)

api/file.go

@@ -31,7 +31,7 @@ func InitFile() {
 	BaseRoutes.NeedFile.Handle("/get_public_link", ApiUserRequired(getPublicLink)).Methods("GET")
 
 	BaseRoutes.Public.Handle("/files/{file_id:[A-Za-z0-9]+}/get", ApiAppHandlerTrustRequesterIndependent(getPublicFile)).Methods("GET")
-	BaseRoutes.Public.Handle("/files/get/{team_id:[A-Za-z0-9]+}/{channel_id:[A-Za-z0-9]+}/{user_id:[A-Za-z0-9]+}/{filename:([A-Za-z0-9]+/)?.+(\\.[A-Za-z0-9]{3,})?}", ApiAppHandlerTrustRequesterIndependent(getPublicFileOld)).Methods("GET")
+	BaseRoutes.Public.Handle("/files/get/{team_id:[A-Za-z0-9]+}/{channel_id:[A-Za-z0-9]+}/{user_id:[A-Za-z0-9]+}/{filename:(?:[A-Za-z0-9]+/)?.+(?:\\.[A-Za-z0-9]{3,})?}", ApiAppHandlerTrustRequesterIndependent(getPublicFileOld)).Methods("GET")
 }
 
 func uploadFile(c *Context, w http.ResponseWriter, r *http.Request) {