Drop PHP8.1 from integration tests as Magento 2.4.8 dropped support for php 8.1

Author: Jonathan Visser

.github/workflows/test.yaml

@@ -6,7 +6,7 @@ jobs:
   integration_test:
     strategy:
       matrix:
-        php_version: [8.1, 8.2, 8.3]  # 8.4 is disabled for now, since Magento 2 does not support this yet.
+        php_version: [8.2, 8.3]  # 8.4 is disabled for now, since Magento 2 does not support this yet.
         testsuite: [general, brancher]
     runs-on: ubuntu-latest
     steps: