Update dependency webmozart/assert to v2

| datasource | package          | from   | to    |
| ---------- | ---------------- | ------ | ----- |
| packagist  | webmozart/assert | 1.12.1 | 2.1.2 |


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

Author: renovate[bot]

composer.json

@@ -40,7 +40,7 @@
         "psr/container": "^1.0 || ^2.0",
         "psr/http-message": "^1.0.1 || ^2.0.0",
         "psr/http-server-middleware": "^1.0",
-        "webmozart/assert": "^1.11.0"
+        "webmozart/assert": "^1.11.0 || ^2.0.0"
     },
     "require-dev": {
         "ext-sqlite3": "*",