Exclude phpunit 10 from 8.0

PHPunit 10 has a dependency on PHP8.1

Author: juampi92

.github/workflows/run-tests.yml

@@ -16,6 +16,9 @@ jobs:
         php: [8.0, 8.1, 8.2]
         phpunit: [^8.3, 9.*, 10.*]
         stability: [prefer-lowest, prefer-stable]
+        exclude:
+          - php: 8.0
+            phpunit: 10.*
 
     name: P${{ matrix.php }} - PHPUnit ${{ matrix.phpunit }} - ${{ matrix.stability }} - ${{ matrix.os }}