chore(renovate): use config:recommended

`config:base` has been deprecated and replaced by `config:recommended`
(https://docs.renovatebot.com/presets-config/#configrecommended).

Found by running `npx -p renovate@37.330.0 renovate-config-validator --strict`.

renovate.json5

@@ -4,7 +4,7 @@
   // https://docs.renovatebot.com/configuration-options/#extends
   extends: [
     // https://docs.renovatebot.com/presets-config/#configbase
-    "config:base",
+    "config:recommended",
 
     // https://docs.renovatebot.com/presets-default/#automergepatch
     ":automergePatch",