chore: Configure Renovate (#489)

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

.github/dependabot.yml

@@ -1,22 +0,0 @@
-version: 2
-updates:
-  # ─── Python (pip) ─────────────────────────────
-  - package-ecosystem: "pip"
-    directory: "/"
-    schedule: { interval: "weekly" }
-    labels: [ "dependencies", "pip" ]
-    groups: # Group patches & minors from dev-only tools
-      dev-py:
-        dependency-type: "development"
-        update-types: ["minor", "patch"]
-
-  # ─── GitHub Actions ───────────────────────────
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule: { interval: "weekly" }
-    labels: [ "dependencies", "gh-actions" ]
-
-  - package-ecosystem: docker
-    directory: /
-    schedule:
-      interval: daily

renovate.json

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