Resolve issues on PHP 7.4 with —prefer-lowest

Author: joelambert

composer.json

@@ -5,7 +5,7 @@
     "require": {
         "php": ">=7.1.0",
         "php-di/php-di": "^6.0.0",
-        "rareloop/router": "^4.3.0",
+        "rareloop/router": "^4.3.1",
         "psr/container": "^1.0",
         "psr/http-message": "^1.0",
         "psr/http-server-middleware": "^1.0",
@@ -26,13 +26,13 @@
     "require-dev": {
         "phpunit/phpunit": "^6.0",
         "php-coveralls/php-coveralls": "^2.0",
-        "mockery/mockery": "^1.0.0",
-        "brain/monkey": "^2.2",
+        "mockery/mockery": "^1.3.0",
+        "brain/monkey": "^2.4",
         "squizlabs/php_codesniffer": "^3.3.1",
         "php-mock/php-mock": "^2.0",
         "codedungeon/phpunit-result-printer": "^0.19.13",
         "codedungeon/php-cli-colors": "^1.10.7",
-        "mikey179/vfsstream": "^1.6",
+        "mikey179/vfsstream": "^1.6.8",
         "antecedent/patchwork": "^2.1.8"
     },
     "autoload": {