PHPUnit upgrades

Author: GrahamCampbell

composer.json

@@ -30,7 +30,7 @@
         "symfony/process": "^3.4|^4.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.8.35|^5.7",
+        "phpunit/phpunit": "^5.7|^6.5",
         "psr/log": "^1.0"
     },
     "suggest": {

tests/Gitonomy/Git/Tests/HooksTest.php

@@ -140,7 +140,7 @@ public function testSet_Existing_ThrowsLogicException($repository)
     {
         $repository->getHooks()->set('foo', 'bar');
 
-        $this->setExpectedException('LogicException');
+        $this->expectException('LogicException');
         $repository->getHooks()->set('foo', 'bar');
     }