chore: configure renovate [skip ci] (#109)

This is an onboarding PR to help you configure settings before regular Pull Requests begin.

For further information on onboarding check out [the docs on echo](https://echo.soundcloud.org/docs/default/component/renovate/onboarding/).
Runtime specific renovate presets are available in our [renovate-presets](https://github.com/soundcloud/renovate-presets) repo.
To enable one of them, update the `extends` config in this PR to reference the runtime.

To activate Renovate, merge this Pull Request. To disable Renovate, simply close this Pull Request unmerged.

Work towards DX-380

Author: remover

.github/renovate.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "github>soundcloud/renovate-presets//nodejs/default"
+  ]
+}