build(deps): bump phpunit/phpunit in /vendor-bin/phpunit

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 9.6.25 to 9.6.26.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/9.6.26/ChangeLog-9.6.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/9.6.25...9.6.26)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-version: 9.6.26
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

vendor-bin/phpunit/composer.lock

@@ -633,16 +633,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.25",
+            "version": "9.6.26",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "049c011e01be805202d8eebedef49f769a8ec7b7"
+                "reference": "a0139ea157533454f611038326f3020b3051f129"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/049c011e01be805202d8eebedef49f769a8ec7b7",
-                "reference": "049c011e01be805202d8eebedef49f769a8ec7b7",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/a0139ea157533454f611038326f3020b3051f129",
+                "reference": "a0139ea157533454f611038326f3020b3051f129",
                 "shasum": ""
             },
             "require": {
@@ -716,7 +716,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.25"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.26"
             },
             "funding": [
                 {
@@ -740,7 +740,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-08-20T14:38:31+00:00"
+            "time": "2025-09-11T06:17:45+00:00"
         },
         {
             "name": "sebastian/cli-parser",