fix(lazygit): use lazy.util.open on Neovim <= 0.10 (#3778)

## What is this PR for?
Use `lazy.util.open` on Neovim <=0.10
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## Does this PR fix an existing issue?
Closes #3776
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  If this PR fixes any issues, please link to the issue here.
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## Checklist

- [x] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.

lua/lazyvim/util/lazygit.lua

@@ -176,6 +176,10 @@ function M.browse()
   local function open(remote)
     if remote then
       LazyVim.info(("Opening [%s](%s)"):format(remote.name, remote.url))
+      if vim.fn.has("nvim-0.10") == 0 then
+        require("lazy.util").open(remote.url, { system = true })
+        return
+      end
       vim.ui.open(remote.url)
     end
   end