build(deps-dev): bump phpunit/phpunit in /web/landing/tools/phpunit

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 10.5.20 to 12.5.22.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/12.5.22/ChangeLog-12.5.md)
- [Commits](sebastianbergmann/phpunit@10.5.20...12.5.22)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-version: 12.5.22
  dependency-type: direct:development
...

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

Author: dependabot[bot]

web/landing/tools/phpunit/composer.json

@@ -2,7 +2,7 @@
   "name": "flow-php/web-flow-tools",
   "description": "Flow PHP ETL - Web Tools",
   "require-dev": {
-    "phpunit/phpunit": "^10"
+    "phpunit/phpunit": "^12"
   },
   "config": {
     "allow-plugins": false