feat: Upgrade to AstroNvim v6

lua/polish.lua

@@ -1,11 +1,5 @@
+if true then return end -- WARN: REMOVE THIS LINE TO ACTIVATE THIS FILE
+
 -- This will run last in the setup process.
 -- This is just pure lua so anything that doesn't
 -- fit in the normal config locations above can go here
-
--- Needed for python3 through mise
--- Locate python3 using PATH
-local python_path = vim.fn.exepath "python3"
-if python_path == nil or python_path == "" then
-else
-  vim.g.python3_host_prog = python_path
-end