Bump phpunit/phpunit from 7.5.16 to 7.5.17

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 7.5.16 to 7.5.17.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/7.5.17/ChangeLog-7.5.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/7.5.16...7.5.17

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

composer.lock

@@ -1039,16 +1039,16 @@
         },
         {
             "name": "doctrine/instantiator",
-            "version": "1.2.0",
+            "version": "1.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "a2c590166b2133a4633738648b6b064edae0814a"
+                "reference": "ae466f726242e637cebdd526a7d991b9433bacf1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/a2c590166b2133a4633738648b6b064edae0814a",
-                "reference": "a2c590166b2133a4633738648b6b064edae0814a",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/ae466f726242e637cebdd526a7d991b9433bacf1",
+                "reference": "ae466f726242e637cebdd526a7d991b9433bacf1",
                 "shasum": ""
             },
             "require": {
@@ -1091,7 +1091,7 @@
                 "constructor",
                 "instantiate"
             ],
-            "time": "2019-03-17T17:37:11+00:00"
+            "time": "2019-10-21T16:45:58+00:00"
         },
         {
             "name": "facebook/webdriver",
@@ -1970,16 +1970,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "7.5.16",
+            "version": "7.5.17",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "316afa6888d2562e04aeb67ea7f2017a0eb41661"
+                "reference": "4c92a15296e58191a4cd74cff3b34fc8e374174a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/316afa6888d2562e04aeb67ea7f2017a0eb41661",
-                "reference": "316afa6888d2562e04aeb67ea7f2017a0eb41661",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/4c92a15296e58191a4cd74cff3b34fc8e374174a",
+                "reference": "4c92a15296e58191a4cd74cff3b34fc8e374174a",
                 "shasum": ""
             },
             "require": {
@@ -2050,7 +2050,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2019-09-14T09:08:39+00:00"
+            "time": "2019-10-28T10:37:36+00:00"
         },
         {
             "name": "psr/log",