Add Github Actions merge_group trigger

[jdddog]

Add the merge_group trigger: https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue#triggering-merge-group-checks-with-github-actions

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (bee243c) 95.34% compared to head (fcd2664) 95.34%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #182 +/- ## ======================================== Coverage 95.34% 95.34% ======================================== Files 16 16 Lines 2383 2383 Branches 309 309 ======================================== Hits 2272 2272 Misses 69 69 Partials 42 42 ```

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