Print missing access message appropriately

lua/neogit/popups/push/actions.lua

@@ -39,20 +39,17 @@ local function push_to(args, remote, branch, opts)
   else
     logger.error("Failed to push to " .. name)
 
-    local stderr = table.concat(res.stderr)
-    if string.find(stderr, "Permission denied (publickey)") then
-      notification.info(
-        "Permission denied (publickey). Please make sure you have the correct access rights and the repository exists."
-      )
-      return
+    local stdout = table.concat(res.stdout)
+
+    if string.find(stdout, "Permission denied %(publickey%)") then
+      notification.info(table.concat(res.stdout, "\n"))
     end
 
     -- Only ask the user whether to force push if not already specified
     if vim.tbl_contains(args, "--force") or vim.tbl_contains(args, "--force-with-lease") then
       return
     end
 
-    local stdout = table.concat(res.stdout)
     if string.find(stdout, "Updates were rejected") == nil then
       return
     end