Update TYPO3 CMS to 8.7.9

composer.lock

@@ -1778,16 +1778,16 @@
         },
         {
             "name": "typo3/cms",
-            "version": "v8.7.8",
+            "version": "v8.7.9",
             "source": {
                 "type": "git",
                 "url": "https://github.com/TYPO3/TYPO3.CMS.git",
-                "reference": "90f1c05c306f4633d7561cb60534b99e394f9e22"
+                "reference": "50b5da136efc62be6f00d9d087648e7a523cc7cf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/TYPO3/TYPO3.CMS/zipball/90f1c05c306f4633d7561cb60534b99e394f9e22",
-                "reference": "90f1c05c306f4633d7561cb60534b99e394f9e22",
+                "url": "https://api.github.com/repos/TYPO3/TYPO3.CMS/zipball/50b5da136efc62be6f00d9d087648e7a523cc7cf",
+                "reference": "50b5da136efc62be6f00d9d087648e7a523cc7cf",
                 "shasum": ""
             },
             "require": {
@@ -1804,10 +1804,10 @@
                 "psr/http-message": "~1.0",
                 "psr/log": "~1.0.0",
                 "swiftmailer/swiftmailer": "~5.4.5",
-                "symfony/console": "^2.7 || ^3.0",
-                "symfony/finder": "^2.7 || ^3.0",
+                "symfony/console": "^2.7 || ^3.0 || ^4.0",
+                "symfony/finder": "^2.7 || ^3.0 || ^4.0",
                 "symfony/polyfill-mbstring": "^1.2",
-                "symfony/yaml": "^2.7 || ^3.0",
+                "symfony/yaml": "^2.7 || ^3.0 || ^4.0",
                 "typo3/class-alias-loader": "^1.0",
                 "typo3/cms-cli": "^1.0.2",
                 "typo3/cms-composer-installers": "^1.2.8",
@@ -1871,7 +1871,7 @@
                 "fiunchinho/phpunit-randomizer": "~3.0.0",
                 "friendsofphp/php-cs-fixer": "^2.0",
                 "typo3/cms-styleguide": "~8.0.8",
-                "typo3/testing-framework": "~1.1.0"
+                "typo3/testing-framework": "~1.2.2"
             },
             "suggest": {
                 "ext-fileinfo": "Used for proper file type detection in the file abstraction layer",
@@ -1976,7 +1976,7 @@
                 "extbase",
                 "typo3"
             ],
-            "time": "2017-10-10T16:08:44+00:00"
+            "time": "2017-12-12T16:09:50+00:00"
         },
         {
             "name": "typo3/cms-cli",