Group JS updates to reduce PR spam a little (#641)

Make renovate only update js dependencies once per week and to group
them all in one PR.

Apparently with this branch name, renovate will validate the config for
me which is fancy

- [x]  no changelog update needed

.github/renovate.json

@@ -1,9 +1,25 @@
 {
   "extends": [
-    "config:base"
+    "config:recommended"
   ],
   "ignorePresets": [
     ":prHourlyLimit2"
   ],
-  "dependencyDashboardAutoclose": true
+  "dependencyDashboardAutoclose": true,
+  "packageRules": [
+    {
+      "groupName": "Javascript packages (non-major)",
+      "groupSlug": "js-update",
+      "schedule": [
+        "on tuesday"
+      ],
+      "matchManagers": [
+        "npm"
+      ],
+      "matchUpdateTypes": [
+        "patch",
+        "minor"
+      ]
+    }
+  ]
 }

justfile

@@ -31,6 +31,9 @@ check-docs:
     (cd tracker/agb-tracker && cargo doc --target=thumbv4t-none-eabi --no-deps)
     cargo doc --no-deps
 
+validate-renovate:
+    npx --yes --package renovate -- renovate-config-validator
+
 _build_docs crate:
     (cd "{{crate}}" && cargo doc --no-deps)