add Lucee 6 to matrix

Author: jclausen

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        cfengine: [ "lucee@5", "adobe@2018", "adobe@2021" ]
+        cfengine: [ "lucee@5", "lucee@6", "adobe@2018", "adobe@2021" ]
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v2