Run Renovate more often

.forgejo/workflows/renovate.yml

@@ -1,10 +1,7 @@
 #
-# The 2am run will rebase what needs rebasing & trigger the CI
-# The 4am run will merge one of them
-#
-# These times are chosen to minimize the likelyhood that another PR
-# is merged at the same time. This would not be necessary if automerge
-# worked but as of 30 March 2024 it does not.
+# Runs every 2 hours, but Renovate is limited to create new PR before 4am.
+# See renovate.json for more settings.
+# Automerge is enabled for Renovate PR's but need to be approved before.
 #
 name: renovate
 
@@ -13,7 +10,7 @@ on:
     branches:
       - 'renovate/**' # self-test updates
   schedule:
-    - cron: '0 2,4 * * *'
+    - cron: '0 0/2 * * *'
 
 env:
   RENOVATE_DRY_RUN: ${{ (github.event_name != 'schedule' && github.ref_name != github.event.repository.default_branch) && 'full' || '' }}