Disable Renovate's dependency dashboard

Author: colinodell

.github/renovate.json

@@ -1,7 +1,8 @@
 {
     "$schema": "https://docs.renovatebot.com/renovate-schema.json",
     "extends": [
-        "config:base"
+        "config:base",
+        ":disableDependencyDashboard"
     ],
     "enabledManagers": ["bundler", "github-actions", "composer"],
     "packageRules": [