Use vim from the Ubuntu repo

Author: dstein64

.github/workflows/build.yml

@@ -32,14 +32,7 @@ jobs:
     - name: Dependencies
       run: |
         sudo apt-get update
-        sudo apt-get install lua-check neovim
-        # Manually installing Vim is necessary until the repo version includes
-        # support for vim9script.
-        git clone https://github.com/vim/vim.git
-        cd vim
-        ./configure
-        make -j $(nproc)
-        sudo make install
+        sudo apt-get install lua-check neovim vim
 
     - name: Check Help Tags
       run: |