Update dependency webmozart/assert to v2

| datasource | package          | from   | to    |
| ---------- | ---------------- | ------ | ----- |
| packagist  | webmozart/assert | 1.12.1 | 2.0.0 |

Author: renovate[bot]

composer.json

@@ -19,7 +19,7 @@
         "psr/http-client-implementation": "*",
         "psr/http-factory": "^1.0",
         "psr/http-message": "^1.0 || ^2.0",
-        "webmozart/assert": "^1.10"
+        "webmozart/assert": "^1.10 || ^2.0"
     },
     "require-dev": {
         "ext-curl": "*",