Fix mergify configuration issue:

Mergify won't do its job. Showing this
message and disabling the branch protection in
GitHub didn't work:
Configuration not compatible with a branch protection setting
The branch protection setting Require branches to be
up to date before merging is not compatible withdraft PR checks.
To keep this branch protection enabled, update your
Mergify configuration to enable in-place checks:
set merge_queue.max_parallel_checks: 1,
set every queue rule batch_size: 1, and avoid
two-step CI (make merge_conditions identical to queue_conditions).
Otherwise, disable this branch protection.

Signed-off-by: Jacob Weinstock <[email protected]>

Author: jacobweinstock

.github/mergify.yml

@@ -1,5 +1,6 @@
 queue_rules:
   - name: default
+    batch_size: 1
     queue_conditions:
       - base=main
       - "#approved-reviews-by>=1"
@@ -9,9 +10,13 @@ queue_rules:
       - label!=do-not-merge
       - label=ready-to-merge
     merge_conditions:
-      # Conditions to get out of the queue (= merged)
-      - check-success=lint
-      - check-success=test
+      - base=main
+      - "#approved-reviews-by>=1"
+      - "#changes-requested-reviews-by=0"
+      - check-success='lint'
+      - check-success='test'
+      - label!=do-not-merge
+      - label=ready-to-merge
     merge_method: merge
     commit_message_template: |
       {{ title }} (#{{ number }})
@@ -21,3 +26,5 @@ pull_request_rules:
     conditions: []
     actions:
       queue:
+merge_queue:
+  max_parallel_checks: 1