[TASK] Fix composer.json and release version 5.0.3

composer.json

@@ -6,7 +6,7 @@
 	"license": [
 		"GPL-2.0+"
 	],
-	"version": "5.0.2",
+	"version": "5.0.3",
 	"support": {
 	},
 	"repositories": [
@@ -17,9 +17,14 @@
 		{
 			"type": "vcs",
 			"url": "https://github.com/froemken/repair_translation.git"
+		},
+		{
+			"type": "composer",
+			"url": "https://composer.typo3.org/"
 		}
 	],
 	"require": {
+		"roave/security-advisories": "dev-master",
 		"typo3/cms-core": "7.6.0 - 8.7.99",
 		"stefanfroemken/repair_translation": "^1.0"
 	},

ext_emconf.php

@@ -19,7 +19,7 @@ $EM_CONF[$_EXTKEY] = [
 	'modify_tables' => '',
 	'clearCacheOnLoad' => 0,
 	'lockType' => '',
-	'version' => '5.0.2',
+	'version' => '5.0.3',
 	'constraints' => [
 		'depends' => [
 			'typo3' => '7.6.0-8.7.99',