Bump phpunit/phpunit from 9.6.14 to 9.6.15

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 9.6.14 to 9.6.15.
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/9.6.15/ChangeLog-9.6.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/9.6.14...9.6.15)

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

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

composer.lock

@@ -802,16 +802,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.14",
+            "version": "9.6.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "43653e6ad7adc22e7b667dd561bf8fcb74c10cf0"
+                "reference": "05017b80304e0eb3f31d90194a563fd53a6021f1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/43653e6ad7adc22e7b667dd561bf8fcb74c10cf0",
-                "reference": "43653e6ad7adc22e7b667dd561bf8fcb74c10cf0",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/05017b80304e0eb3f31d90194a563fd53a6021f1",
+                "reference": "05017b80304e0eb3f31d90194a563fd53a6021f1",
                 "shasum": ""
             },
             "require": {
@@ -885,7 +885,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.14"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.15"
             },
             "funding": [
                 {
@@ -901,7 +901,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-12-01T06:10:48+00:00"
+            "time": "2023-12-01T16:55:19+00:00"
         },
         {
             "name": "sebastian/cli-parser",