Update require-dev

Author: renovate[bot]

composer.json

@@ -2,9 +2,9 @@
   "name": "automattic/sensei-content-drip",
   "description": "Sensei LMS Content Drip",
   "require-dev": {
-    "php": "^7",
-    "phpunit/phpunit": "9.5.10",
-    "dealerdirect/phpcodesniffer-composer-installer": "0.7.1",
+    "php": "^8",
+    "phpunit/phpunit": "10.2.5",
+    "dealerdirect/phpcodesniffer-composer-installer": "1.0.0",
     "phpcompatibility/phpcompatibility-wp": "2.1.2",
     "squizlabs/php_codesniffer": "3.6.1",
     "wp-coding-standards/wpcs": "2.3.0"