Update phpspec to latest version

Also updated all other dependents.

Author: jlinskeseder

composer.json

@@ -17,17 +17,17 @@
     },
     "require": {
         "php": ">=7.0",
-        "friendsofphp/php-cs-fixer": "^2.0",
-        "karriere/phpspec-matchers": "^1.0",
-        "leanphp/phpspec-code-coverage": "^3.1",
-        "phpmd/phpmd": "^2.4",
-        "phpspec/phpspec": "^3.2",
-        "squizlabs/php_codesniffer": "^2.8",
-        "symfony/console": "^3.2",
-        "symfony/process": "^3.2"
+        "friendsofphp/php-cs-fixer": "^2.9",
+        "karriere/phpspec-matchers": "^2.0",
+        "leanphp/phpspec-code-coverage": "^4.0",
+        "phpmd/phpmd": "^2.6",
+        "phpspec/phpspec": "^4.0",
+        "squizlabs/php_codesniffer": "^3.2",
+        "symfony/console": "^3.2 || ^4.0",
+        "symfony/process": "^3.2 || ^4.0"
     },
     "require-dev": {
-        "composer/composer": "^1.3.1"
+        "composer/composer": "^1.5"
     },
     "scripts": {
         "test": "Karriere\\CodeQuality\\SpecificationTest::run",