Bump symfony/console, symfony/yaml and phpunit/phpunit

Author: tomzx

composer.json

@@ -24,13 +24,13 @@
 
 		"hassankhan/config": "^2.0",
 		"nikic/php-parser": "^4.0",
-		"symfony/console": "^4.0",
-		"symfony/yaml": "^4.0",
+		"symfony/console": "^4.0|^5.0",
+		"symfony/yaml": "^4.0|^5.0",
 		"tomzx/finder": "^0.1"
 	},
 	"require-dev": {
 		"mockery/mockery": "^1.0",
-		"phpunit/phpunit": "^7.0|^8.0"
+		"phpunit/phpunit": "^7.0|^8.0|^9.0"
 	},
 	"bin": [
 		"bin/php-semver-checker"