chore(RELEASE-1142): react to merge_group events (#1165)

- merge queues use the event `merge_group`
- we need the workflows to react to those since
  the checks are required for merging

Signed-off-by: Scott Hebert <[email protected]>

Author: scoheb

.github/workflows/lint.yaml

@@ -3,6 +3,8 @@ name: Linters
 on:  # yamllint disable-line rule:truthy
   pull_request:
     types: ['opened', 'reopened', 'synchronize']
+  merge_group:
+    types: [checks_requested]
   workflow_dispatch:
 jobs:
   yamllint:

.github/workflows/tekton_task_tests.yaml

@@ -6,6 +6,8 @@ on:
       - opened
       - synchronize
       - reopened
+  merge_group:
+    types: [checks_requested]
 jobs:
   run-tekton-task-tests:
     name: Run Tekton Task tests