Fix luacheck workflow Lua build on ubuntu-latest

Author: gajop

.github/workflows/luacheck.yml

@@ -14,8 +14,8 @@ jobs:
 
       - name: Install luacheck
         run: |
-          pip install hererocks
-          hererocks env --lua 5.1 -rlatest
+          python3 -m pip install hererocks
+          python3 -m hererocks env --lua 5.1 --no-readline -rlatest
           source env/bin/activate
           luarocks install luacheck