fix(github-actions): remove branchConcurrentLimit option from renovate preset (#2811)

This option seem to cause issue when used with prCuncurrentLimit.
PR Close #2811

Author: alan-agius4

renovate-presets/default.json5

@@ -8,7 +8,6 @@
   // Schedule Renovate to run during off-peak hours
   schedule: ['after 10:00pm every weekday', 'before 5:00am every weekday', 'every weekend'],
   prConcurrentLimit: 8,
-  branchConcurrentLimit: 2,
   prHourlyLimit: 4,
   timezone: 'America/Tijuana',