I'm splitting this out from #566 to be tested separately. Newer LuaJIT has fixes for ARM64 needed to run Terra, but may also provide benefits on other platforms.
I'm also changing the default Lua back to LuaJIT on all platforms except PPC64le, since Moonjit has been archived. PPC64le is the only architecture where we really can't drop support for it.
I'm splitting this out from #566 to be tested separately. Newer LuaJIT has fixes for ARM64 needed to run Terra, but may also provide benefits on other platforms.
I'm also changing the default Lua back to LuaJIT on all platforms except PPC64le, since Moonjit has been archived. PPC64le is the only architecture where we really can't drop support for it.