ci: use luajit-openresty instead of luajit

Author: mikyll

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        lua-version: ["5.1", "5.2", "5.3", "5.4", "luajit"]
+        lua-version: ["5.1", "5.2", "5.3", "5.4", "luajit-openresty"]
 
     name: Lua ${{ matrix.lua-version }}
 
@@ -96,7 +96,7 @@ jobs:
     - name: Set up LuaJIT
       uses: leafo/gh-actions-lua@v10.0.0
       with:
-        luaVersion: "luajit"
+        luaVersion: "luajit-openresty"
 
     - name: Set up luarocks
       uses: leafo/gh-actions-luarocks@v4.0.0