Merge branch 'renovate/configure' into 'dev'

Configure Renovate

See merge request web-et-numerique/llle_project/backoffice-client!31

renovate.json

+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "local>systemes-dinformation/renovate/renovate-config"
+  ]
+}