Update dependency league/oauth2-server to v9

| datasource | package              | from  | to    |
| ---------- | -------------------- | ----- | ----- |
| packagist  | league/oauth2-server | 8.5.5 | 9.1.0 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -36,7 +36,7 @@
     },
     "require": {
         "php": "~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0",
-        "league/oauth2-server": "^8.3.5",
+        "league/oauth2-server": "^8.3.5 || ^9.0.0",
         "mezzio/mezzio-authentication": "^1.0",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-factory": "^1.0",