Update all non-major dependencies

| datasource | package              | from   | to     |
| ---------- | -------------------- | ------ | ------ |
| packagist  | phpunit/phpunit      | 9.6.10 | 9.6.20 |
| packagist  | psalm/plugin-phpunit | 0.18.4 | 0.19.0 |


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

composer.json

@@ -20,8 +20,8 @@
     },
     "require-dev": {
         "laminas/laminas-coding-standard": "~2.5.0",
-        "phpunit/phpunit": "9.6.10",
-        "psalm/plugin-phpunit": "^0.18.0",
+        "phpunit/phpunit": "9.6.20",
+        "psalm/plugin-phpunit": "^0.19.0",
         "roave/security-advisories": "dev-master",
         "vimeo/psalm": "^5.0.0"
     },