Try to use 3rd party lua runtime.

.github/workflows/ci.yaml

@@ -35,7 +35,6 @@ jobs:
       - uses: actions/checkout@v1
         with:
           submodules: true
-      - name: 'Install LUA runtime'
-        run: |
-          sh ci/lua-setup.sh
-          lua -v
\ No newline at end of file
+      - uses: leafo/gh-actions-lua@v5
+        with:
+          luaVersion: "5.3.5"
\ No newline at end of file

ci/lua-setup.sh

-#!/bin/bash
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-curl -R -O http://www.lua.org/ftp/lua-5.3.5.tar.gz
-tar zxf lua-5.3.5.tar.gz
-cd lua-5.3.5
-make linux test
-cd src
-LUA_PATH=`pwd`
-export PATH=$PATH:$LUA_PATH
-echo $PATH
\ No newline at end of file