chore(renovate): execute once a week (#276)

This is necessary because the amount of pull requests related to `mise` is overwhelming.

Also, extend the full configuration from the [recommended preset][0].

As of 2025-07-23, this is the recommended preset:

```json
{
  "extends": [
    ":dependencyDashboard",
    ":semanticPrefixFixDepsChoreOthers",
    ":ignoreModulesAndTests",
    "group:monorepos",
    "group:recommended",
    "mergeConfidence:age-confidence-badges",
    "replacements:all",
    "workarounds:all"
  ]
}
```

Reviewed-on: #276

[0]: https://docs.renovatebot.com/presets-config/#configrecommended

Co-authored-by: Joao P Dubas <joao.dubas+gitea@gmail.com>
Co-committed-by: Joao P Dubas <joao.dubas+gitea@gmail.com>

renovate.json

@@ -1,6 +1,7 @@
 {
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": [
-    "config:base"
-  ]
+	"$schema": "https://docs.renovatebot.com/renovate-schema.json",
+	"extends": [
+		"config:recommended",
+		"schedule:earlyMondays"
+	]
 }