package: fix cmp-nvim-lsp - default_capabilities

Breaking change in cmp-nvim-lsp
hrsh7th/cmp-nvim-lsp#38

Update lspconfig configuration to use default_capabilities

fnl/config/plugin/lspconfig.fnl

@@ -39,7 +39,7 @@
                 (vim.lsp.with
                  vim.lsp.handlers.signature_help
                  {:border "single"})}
-      capabilities (cmplsp.update_capabilities (vim.lsp.protocol.make_client_capabilities))
+      capabilities (cmplsp.default_capabilities)
       on_attach (fn [client bufnr]
                   (do
                     (nvim.buf_set_keymap bufnr :n :gd "<Cmd>lua vim.lsp.buf.definition()<CR>" {:noremap true})