fix: special case luajit

god, i wish luajit would just build as 'lua'.

.github/workflows/lua-tests.yml

@@ -13,10 +13,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: leafo/gh-actions-lua@ef9239997afff6d2d8b42ec9729c1d4b7f2f1302 # HACK: use the latest version of the action. When it is updated, use v10.0.1 instead!
+      - uses: leafo/gh-actions-lua@v10
         with:
           luaVersion: ${{ matrix.luaVersion }}
       - name: test against lua ${{ matrix.luaVersion }}
         run: |
-          ls -la .lua/bin
-          lua ./test/init.lua
+          lua=$(command -v lua 2>/dev/null|| command -v luajit 2>/dev/null)
+          "$lua" ./test/init.lua