Update neovim setup

Switch from pyright to python-lsp-server

templates/nvim/lua/lsp.lua.j2

@@ -23,7 +23,9 @@ end
 
 --enable some language servers with the additional completion capabilities
 --offered by nvim-cmp
-local servers = { 'ansiblels', 'yamlls', 'cssls', 'jsonls', 'tsserver', }
+local servers = {
+  'ansiblels', 'yamlls', 'cssls', 'jsonls', 'tsserver', 'bashls', 'lua_ls'
+}
 
 --add additional capabilities supported by nvim-cmp
 local capabilities = vim.lsp.protocol.make_client_capabilities()
@@ -40,9 +42,19 @@ end
 
 local util = require('lspconfig/util')
 
-nvim_lsp.pyright.setup({
+nvim_lsp.pylsp.setup({
   on_attach = on_attach,
   capabilities = capabilities,
+  cmd = { 'pylsp', '--verbose' },
+  settings = {
+    pylsp = {
+      plugins = {
+        ruff = {
+          enabled = true
+        }
+      }
+    }
+  },
   root_dir = function(fname)
     return util.root_pattern('.git', 'setup.cfg', 'requirements')(fname) or
       util.path.dirname(fname)