try phpunit 10

Signed-off-by: Julien Veyssier <julien-nc@posteo.net>

Author: julien-nc

composer.json

@@ -36,9 +36,9 @@
   "require-dev": {
     "nextcloud/coding-standard": "^1.0.0",
     "symfony/event-dispatcher": "^4",
-    "phpunit/phpunit": "^9.5",
     "nextcloud/ocp": "dev-stable28",
-    "psalm/phar": "^6"
+    "psalm/phar": "^6",
+    "phpunit/phpunit": "^10"
   },
   "extra": {
     "mozart": {