Fix deprecated get_active_clients

lua/outline/providers/nvim-lsp.lua

@@ -35,7 +35,7 @@ local function get_appropriate_client(bufnr, capability)
   local clients, use_client
 
   if _G._outline_nvim_has[8] then
-    clients = l.get_active_clients({ bufnr = bufnr })
+    clients = l.get_clients({ bufnr = bufnr })
     for _, client in ipairs(clients) do
       if _check_client(client, capability) then
         use_client = client

lua/outline/utils/lsp.lua

@@ -3,7 +3,7 @@ local config = require('outline.config')
 local M = {}
 
 function M.is_buf_attached_to_lsp(bufnr)
-  local clients = vim.lsp.get_active_clients({ bufnr = bufnr or 0 })
+  local clients = vim.lsp.get_clients({ bufnr = bufnr or 0 })
   return clients ~= nil and #clients > 0
 end