chore: Configure Renovate (#17)

* Add renovate.json

* feat: group github actions updates

---------

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

Author: renovate[bot]

renovate.json

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "packageRules": [
+    {
+      "matchDatasources": [
+        "github-actions"
+      ],
+      "groupName": "github-actions"
+    }
+  ]
+}