Add two guild members to github action (#51914)

This PR is similar to this one:
https://github.com/zed-industries/zed/pull/51753

Release Notes:

- N/A

.github/workflows/pr_labeler.yml

@@ -58,8 +58,10 @@ jobs:
               'iksuddle',
               'ishaksebsib',
               'lingyaochu',
+              'loadingalias',
               'marcocondrache',
               'mchisolm0',
+              'mostlyKIGuess',
               'nairadithya',
               'nihalxkumar',
               'notJoon',