Enabling more PHP versions

Author: byjg

.github/workflows/phpunit.yaml

@@ -16,12 +16,12 @@ jobs:
     strategy:
       matrix:
         php-version:
-#          - "8.1"
-#          - "8.0"
-#          - "7.4"
+          - "8.1"
+          - "8.0"
+          - "7.4"
           - "7.3"
-#          - "7.2"
-#          - "7.1"
+          - "7.2"
+          - "7.1"
 #          - "7.0"
 #          - "5.6"