update mergify

[Fraccaman]

Describe your changes

speculative_checks is deprecated in favor of max_parallel_checks

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[mergify]

Merge Protections

Your pull request matches the following merge protections and will not be merged until they are valid.

📃 Configuration Change Requirements

Mergify configuration change

• check-success = Configuration changed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.24%. Comparing base (3bba226) to head (93e1c6a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3892   +/-   ##
=======================================
  Coverage   73.24%   73.24%           
=======================================
  Files         341      341           
  Lines      105240   105240           
=======================================
+ Hits        77081    77085    +4     
+ Misses      28159    28155    -4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[Fraccaman]

for some reason it doesn't like the new field https://docs.mergify.com/merge-queue/speculative-checks. Lets leave it as draft for now