Merge pull request #69 from WyriHaximus/renovate/phpunit

Update dependency wyrihaximus/test-utilities to ^8.4.0

Author: WyriHaximus

composer.json

@@ -13,7 +13,7 @@
   },
   "require-dev": {
     "wyrihaximus/makefiles": "^0.7",
-    "wyrihaximus/test-utilities": "^8.3.0"
+    "wyrihaximus/test-utilities": "^8.4.0"
   },
   "autoload": {
     "psr-4": {