Bump phpspec/prophecy from 1.8.0 to 1.8.1

Bumps [phpspec/prophecy](https://github.com/phpspec/prophecy) from 1.8.0 to 1.8.1.
- [Release notes](https://github.com/phpspec/prophecy/releases)
- [Changelog](https://github.com/phpspec/prophecy/blob/master/CHANGES.md)
- [Commits](https://github.com/phpspec/prophecy/compare/1.8.0...1.8.1

)

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

composer.lock

@@ -1634,16 +1634,16 @@
         },
         {
             "name": "phpspec/prophecy",
-            "version": "1.8.0",
+            "version": "1.8.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpspec/prophecy.git",
-                "reference": "4ba436b55987b4bf311cb7c6ba82aa528aac0a06"
+                "reference": "1927e75f4ed19131ec9bcc3b002e07fb1173ee76"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/4ba436b55987b4bf311cb7c6ba82aa528aac0a06",
-                "reference": "4ba436b55987b4bf311cb7c6ba82aa528aac0a06",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/1927e75f4ed19131ec9bcc3b002e07fb1173ee76",
+                "reference": "1927e75f4ed19131ec9bcc3b002e07fb1173ee76",
                 "shasum": ""
             },
             "require": {
@@ -1664,8 +1664,8 @@
                 }
             },
             "autoload": {
-                "psr-0": {
-                    "Prophecy\\": "src/"
+                "psr-4": {
+                    "Prophecy\\": "src/Prophecy"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -1693,7 +1693,7 @@
                 "spy",
                 "stub"
             ],
-            "time": "2018-08-05T17:53:17+00:00"
+            "time": "2019-06-13T12:50:23+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",