Stale injected branch protection info

[ggreif]

Expected Behavior

When changing the GH brach protection rules to run macos-13 instead of the (unsupported) macos-12, mergify should update the injected branch protection rules.

Actual Behavior

I merged dfinity/motoko#4791 a few days back. Our admins changed the branch protections, now they don't contain macos-12 references any more.

Instead the injected rules (even for fresh PRs!) won't get updated, and stay stale. This renders the PRs non-merged until I manually intervene. See below:

Here is a live example: dfinity/motoko#4802

Steps to Reproduce the Problem

1. Change one target OS to a bumped one in the build matrix (macos-12 -> macos-13) and update branch protections for the main (default) branch.
2. Re-run checks
3. Check Mergify summary: Injected rules are stale

Running @mergifyio refresh won't help.

Specifications

• Pull Request URL: ci(Mergify): configuration update dfinity/motoko#4802
• Mergify Config URL: https://github.com/dfinity/motoko/pull/4802/checks?check_run_id=33986327476

[ggreif]

Recent PRs have the correct check in that place. Closing as not reproducible.