Configure Renovate (#20)

* Add renovate.json

* fixup! Add renovate.json

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Cyril Gaudin <[email protected]>

Author: renovate[bot]

.github/dependabot.yml

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:base"
+  ]
+}