chore(deps-dev): Bump phpunit/phpunit from 9.6.10 to 9.6.11 (#4806)

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 9.6.10 to 9.6.11.
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/9.6.11/ChangeLog-9.6.md)
- [Commits](sebastianbergmann/phpunit@9.6.10...9.6.11)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

composer.json

@@ -1,6 +1,6 @@
 {
     "require-dev": {
-        "phpunit/phpunit": "9.6.10",
+        "phpunit/phpunit": "9.6.11",
         "automattic/vipwpcs": "2.3.3",
         "phpcompatibility/phpcompatibility-wp": "2.1.4",
         "erusev/parsedown": "1.7.4",