Forgot to update this for PHP8

.github/workflows/php.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: [7.0, 7.1, 7.2, 7.3, 7.4]
+        php: [8.0, 8.1, 8.2]
     steps:
     - uses: actions/checkout@v1
     - uses: shivammathur/setup-php@v2