Add PHP7.1 to Matrix Testing

Author: Alex Westergaard

.github/workflows/ci.yml

@@ -10,11 +10,11 @@ jobs:
   render-php:
     runs-on: ${{ matrix.operating-system }}
     strategy:
-      max-parallel: 4
+      max-parallel: 3
       fail-fast: false
       matrix:
         operating-system: ["ubuntu-latest", "windows-latest"]
-        php-versions: ["7.0", "7.4", "8.0", "8.1"]
+        php-versions: ["7.0", "7.1", "7.4", "8.0", "8.1"]
         phpunit-versions: ["latest"]
     steps:
       - uses: actions/checkout@v3