Updated php versions in build action

Author: J-T-McC

.github/workflows/build.yml

@@ -51,22 +51,13 @@ jobs:
     strategy:
       matrix:
         php:
-        - 7.1
-        # - 7.2
-        # - 7.3
-        # - 7.4
-        # - 8.0
+          - 7.4
+          - 8.0
         include:
-          - php: 7.1
-            phpunit: 7.5.20
-          # - php: 7.2
-          #   phpunit: 8.5.13
-          # - php: 7.3
-          #   phpunit: 9.5.0
-          # - php: 7.4
-          #   phpunit: 9.5.0
-          # - php: 8.0
-          #   phpunit: 9.5.0
+          - php: 7.4
+            phpunit: 9.5.0
+          - php: 8.0
+            phpunit: 9.5.0
 
     steps:
       - uses: actions/checkout@v2