Build(deps-dev): Bump vimeo/psalm from 5.23.1 to 6.9.6

Bumps [vimeo/psalm](https://github.com/vimeo/psalm) from 5.23.1 to 6.9.6.
- [Release notes](https://github.com/vimeo/psalm/releases)
- [Commits](vimeo/psalm@5.23.1...6.9.6)

---
updated-dependencies:
- dependency-name: vimeo/psalm
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

composer.json

@@ -3,7 +3,7 @@
     "type": "project",
     "require-dev": {
         "phpunit/phpunit": "^9.5",
-        "vimeo/psalm": "^5.13",
+        "vimeo/psalm": "^6.9",
         "nextcloud/coding-standard": "^1.0"
     },
     "license": "AGPL",