ci: Replace Dependabot with Renovate (#399)

* Add renovate.json

* ci: Replace dependabot config with Renovate config

Co-authored-by: Renovate Bot <[email protected]>
Co-authored-by: Dylan Anthony <[email protected]>

Author: 3 people

Diff for: .github/dependabot.yml

@@ -0,0 +1,5 @@
+{
+  "extends": [
+    "config:base"
+  ]
+}