Update dependency wyrihaximus/test-utilities to ^8.7.0

Author: renovate-runner[bot]

composer.json

@@ -24,7 +24,7 @@
     "nyholm/psr7": "^1.8.2",
     "slim/psr7": "^1.7.1",
     "wyrihaximus/makefiles": "^0.7.12",
-    "wyrihaximus/test-utilities": "^8.6.0"
+    "wyrihaximus/test-utilities": "^8.7.0"
   },
   "autoload": {
     "psr-4": {