Bump phpunit/phpunit from 9.6.3 to 9.6.4 (#5597)

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 9.6.3 to 9.6.4.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/main/ChangeLog-9.6.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/9.6.3...9.6.4)

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

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

composer.lock

@@ -2310,16 +2310,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.3",
+            "version": "9.6.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "e7b1615e3e887d6c719121c6d4a44b0ab9645555"
+                "reference": "9125ee085b6d95e78277dc07aa1f46f9e0607b8d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/e7b1615e3e887d6c719121c6d4a44b0ab9645555",
-                "reference": "e7b1615e3e887d6c719121c6d4a44b0ab9645555",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/9125ee085b6d95e78277dc07aa1f46f9e0607b8d",
+                "reference": "9125ee085b6d95e78277dc07aa1f46f9e0607b8d",
                 "shasum": ""
             },
             "require": {
@@ -2392,7 +2392,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.3"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.4"
             },
             "funding": [
                 {
@@ -2408,7 +2408,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-02-04T13:37:15+00:00"
+            "time": "2023-02-27T13:06:37+00:00"
         },
         {
             "name": "sebastian/cli-parser",