Update .gitignore

.gitignore

@@ -1,38 +1,3 @@
-# Configuration
-/config/parameters.yml
-/config/config_dev.yaml
-/config/config_prod.yaml
-.env.local
-composer.local.json
+vendor/
 .php-version
-.vscode/
-
-/vendor/*
-!/vendor/postyou
-
-/vendor/postyou/*
-!/vendor/postyou/contao-vsm-bundle/
-
-/files/System/Mitgliederdaten/*
-/files/System/Partnerdaten/*
-
-# Contao Manager
-/contao-manager/
-
-# Generated folders
-/assets/
-/system/*
-!/system/config/
-/var/
-/public/*
-!/public/.htaccess
-/app/
-.php-cs-fixer.cache
-.file-ops
-
-# Skip files
-/system/modules/*/.skip
-node_modules/
-
-# bin
-bin/
+composer.lock