drop php 8.1 from test matrix (#25)

Author: 3qdev

.github/workflows/tests.yml

@@ -9,12 +9,10 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [8.1, 8.2, 8.3, 8.4]
+        php: [8.2, 8.3, 8.4]
         symfony: [5.4.*, 6.4.*, 7.0.*]
         dependency-version: [prefer-lowest, prefer-stable]
         exclude:
-          - php: 8.1
-            symfony: 7.0.*
           - php: 8.4
             symfony: 5.4.*
           - php: 8.4