chore(deps): update dependency phpunit/phpunit to v9.6.8

This MR contains the following updates:

Package	Type	Update	Change
phpunit/phpunit (source)	require-dev	patch	9.6.7 -> 9.6.8

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Release Notes

sebastianbergmann/phpunit

v9.6.8

Compare Source

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composer.lock

@@ -8204,16 +8204,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.7",
+            "version": "9.6.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "c993f0d3b0489ffc42ee2fe0bd645af1538a63b2"
+                "reference": "17d621b3aff84d0c8b62539e269e87d8d5baa76e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/c993f0d3b0489ffc42ee2fe0bd645af1538a63b2",
-                "reference": "c993f0d3b0489ffc42ee2fe0bd645af1538a63b2",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/17d621b3aff84d0c8b62539e269e87d8d5baa76e",
+                "reference": "17d621b3aff84d0c8b62539e269e87d8d5baa76e",
                 "shasum": ""
             },
             "require": {
@@ -8287,7 +8287,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.7"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.8"
             },
             "funding": [
                 {
@@ -8303,7 +8303,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-04-14T08:58:40+00:00"
+            "time": "2023-05-11T05:14:45+00:00"
         },
         {
             "name": "sebastian/cli-parser",