update phpunit

dietercoopman · dietercoopman · commit 010bc3781330 · 2021-09-04T11:28:10.000+02:00
diff --git a/composer.json b/composer.json
@@ -36,6 +36,6 @@
     },
     "require-dev": {
         "orchestra/testbench": "^6.20",
-        "phpunit/phpunit": "^9.5"
+        "phpunit/phpunit": "^8.0|^9.0"
     }
 }
