updated core 8.7.14 > 8.8.6

https://www.drupal.org/docs/updating-drupal/migrate-composer-project-for-drupal-earlier-than-880

composer.json

@@ -21,9 +21,8 @@
     ],
     "require": {
         "php": ">=5.6",
-        "composer/installers": "^1.2",
+        "composer/installers": "^1.7",
         "cweagans/composer-patches": "^1.6.5",
-        "drupal-composer/drupal-scaffold": "^2.5",
         "drupal/addtoany": "1.12.0",
         "drupal/admin_toolbar": "2.0",
         "drupal/adminimal_theme": "^1.4",
@@ -37,7 +36,8 @@
         "drupal/config_ignore": "2.1.0",
         "drupal/console": "^1.0.2",
         "drupal/context": "4.0.0-beta2",
-        "drupal/core": "8.7.14",
+        "drupal/core-composer-scaffold": "8.8.6",
+        "drupal/core-recommended": "^8.8",
         "drupal/ctools": "3.2.0",
         "drupal/date_range_formatter": "3.1.0",
         "drupal/devel": "2.1",
@@ -76,8 +76,6 @@
         "drush/drush": "^9.0.0",
         "oomphinc/composer-installers-extender": "^1.1",
         "vlucas/phpdotenv": "^2.4",
-        "webflo/drupal-core-require-dev": "8.7.14",
-        "webflo/drupal-core-strict": "^8.0",
         "webflo/drupal-finder": "^1.0.0",
         "webmozart/path-util": "^2.3",
         "zaporylie/composer-drupal-optimizations": "^1.0"