Configure Renovate (#2438)

* Add renovate.json

* Update renovate.json

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Luca Comellini <luca.com@gmail.com>

Author: renovate[bot]

renovate.json

@@ -0,0 +1,12 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "github>nginxinc/k8s-common"
+  ],
+  "kubernetes": {
+    "fileMatch": [
+      "examples/.+\\.yaml$",
+      "suite/.+\\.yaml$"
+    ]
+  }
+}