nvim: Version-pin treesitter again

Treesitter had to run as a non-versioned (trunk-tracking) plugin for a
while since there was no updated version released.
Now that it is we can return to a nicely versioned tag.

nvim/.config/nvim/lua/plugins/treesitter.lua

@@ -21,7 +21,6 @@ return {
 			},
 			{ "nushell/tree-sitter-nu", version = false },
 		},
-		version = false, -- TODO: Can be set to versioned if new version after 2024-12-12 is released
 		config = function()
 			local enabled_parsers = {}
 			for _, lang in pairs(Languages) do