Add a renovate.json schema validation (#45)

Reviewed-on: #45

.pre-commit-config.yaml

@@ -49,3 +49,8 @@ repos:
   hooks:
   - id: prettier
     types_or: [css, javascript]
+
+- repo: https://github.com/python-jsonschema/check-jsonschema
+  rev: 0.36.0
+  hooks:
+  - id: check-renovate

renovate.json

@@ -13,6 +13,17 @@
       "postUpdateOptions": [
         "npmInstall"
       ]
+    },
+    {
+      "matchPackageNames": [
+        "npm"
+      ],
+      "matchUpdateTypes": [
+        "major",
+        "minor",
+        "patch"
+      ],
+      "enabled": true
     }
   ]
 }