LuaJIT has stopped publishing tarballs on LuaJIT.org, so the workflow…

… has broken. In the meantime, we'll just test against OpenResty's LuaJIT distribution.

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        luaVersion: ["5.1", "5.2", "5.3", "5.4", "luajit"]
+        luaVersion: ["5.1", "5.2", "5.3", "5.4", "luajit-openresty"]
 
     steps:
     - name: Checkout code