Test Lua 5.4.4 using GitHub Actions

Author: siffiejoe

.github/workflows/run-tests.yml

@@ -22,6 +22,7 @@ jobs:
           - "5.4.1"
           - "5.4.2"
           - "5.4.3"
+          - "5.4.4"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2