Update Composer, update everything

web/core/modules/system/config/install/system.site.yml

@@ -1,5 +1,5 @@
 uuid: ''
-name: 'Drupal'
+name: ''
 mail: ''
 slogan: ''
 page:

web/core/modules/system/config/schema/system.schema.yml

@@ -5,8 +5,11 @@ system.site:
   label: 'Site information'
   mapping:
     uuid:
-      type: string
+      type: uuid
       label: 'Site UUID'
+      constraints:
+        Uuid: []
+        NotNull: []
     name:
       type: label
       label: 'Site name'
@@ -185,13 +188,6 @@ system.performance:
         gzip:
           type: boolean
           label: 'Compress JavaScript files.'
-    response:
-      type: mapping
-      label: 'Response performance settings'
-      mapping:
-        gzip:
-          type: boolean
-          label: 'Compress cached pages'
     stale_file_threshold:
       type: integer
       label: 'Stale file threshold'