update dev tools

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

composer.json

@@ -50,16 +50,16 @@
 		"voku/anti-xss": "^4.1"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "8.4.1",
+		"phpunit/phpunit": "^9",
 		"php": ">=7.3",
 		"ext-pcntl": "*",
 		"phpcompatibility/php-compatibility": "*",
 		"squizlabs/php_codesniffer": "*",
-		"pdepend/pdepend": "^2.5",
-		"sebastian/phpcpd": "^4.1",
-		"theseer/phpdox": "^0.12.0",
-		"phploc/phploc": "^5.0",
-		"phpmd/phpmd": "^2.6"
+		"pdepend/pdepend": "^2.9",
+		"sebastian/phpcpd": "^6.0",
+		"phploc/phploc": "^7.0",
+		"phpmd/phpmd": "^2.10",
+		"phpunit/php-timer" : "^5"
 	},
 	"suggest": {
 		"ext-bcmath": "*",