Update dependency psalm/plugin-phpunit to ^0.20.0

| datasource | package              | from   | to     |
| ---------- | -------------------- | ------ | ------ |
| packagist  | psalm/plugin-phpunit | 0.19.7 | 0.20.1 |


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

Author: renovate[bot]

composer.json

@@ -28,7 +28,7 @@
     "phpunit/phpunit": "^12.5.22",
     "doctrine/orm": "^3.5",
     "symfony/cache": "^6.4 || ^7.0 || ^8.0",
-    "psalm/plugin-phpunit": "^0.19.0",
+    "psalm/plugin-phpunit": "^0.20.0",
     "vimeo/psalm": "^6.16"
   },
   "autoload": {