Set branch for tree-sitter

In a hopeful attempt at getting the bloody thing working.

alex/nvim/init.lua

@@ -864,6 +864,7 @@ require("lazy").setup({
 	},
 	{ -- Highlight, edit, and navigate code
 		"nvim-treesitter/nvim-treesitter",
+		branch = 'master',
 		build = ":TSUpdate",
 		opts = {
 			ensure_installed = { "python", "bash", "c", "diff", "html", "lua", "luadoc", "markdown", "vim", "vimdoc" },