Configure Renovate (#74)

* Add renovate.json

* Update renovate.json

---------

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

Author: renovate[bot]

renovate.json

@@ -0,0 +1,25 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "packageRules": [
+    {
+      "matchManagers": [
+        "npm"
+      ],
+      "groupName": "all npm dependencies",
+      "schedule": [
+        "on monday at 10:00am"
+      ]
+    },
+    {
+      "matchDepTypes": ["devDependencies"],
+      "rangeStrategy": "pin"
+    },
+    {
+      "matchDepTypes": ["dependencies"],
+      "rangeStrategy": "widen"
+    }
+  ]
+}