[DEPS]: Bump wpackagist-plugin/memcached from 3.2.2 to 4.0.0

Bumps wpackagist-plugin/memcached from 3.2.2 to 4.0.0.

---
updated-dependencies:
- dependency-name: wpackagist-plugin/memcached
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

composer.json

@@ -47,7 +47,7 @@
         "symfony/dotenv": "^5.0",
         "symfony/yaml": "^5.0",
         "wpackagist-plugin/advanced-caching": "@dev",
-        "wpackagist-plugin/memcached": "^3.2",
+        "wpackagist-plugin/memcached": "^4.0",
         "wpackagist-plugin/query-monitor": "^3.5"
     },
     "require-dev": {