removed dependabot config

and set renovate to cake-like defaults

Author: nils-a

.github/dependabot.yml

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "github>cake-contrib/renovate-presets:cake-recipe",
+    "github>cake-contrib/renovate-presets:github-actions" ],
+  "packageRules": [
+    {
+      "description": "Updates to Cake.Core references are breaking.",
+      "matchPackageNames": ["Cake.Core"],
+      "matchUpdateTypes": ["major"],
+      "labels": ["Breaking Change"]
+    }
+  ]
+}