update vim docs to list minimum neovim version as 0.9.0 since that's all I've tested it on

Author: b-src

.github/workflows/panvimdoc.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: kdheepak/panvimdoc@main
         with:
           vimdoc: lazy-nix-helper.nvim
-          version: "Neovim >= 0.8.0?"
+          version: "Neovim >= 0.9.0?"
           treesitter: true
       - uses: stefanzweifel/git-auto-commit-action@v4
         with: