ci: run PR triage on ubuntu-24.04-arm for faster pickup (#3270)

Author: hubcio

.github/workflows/pr-triage-apply.yml

@@ -127,7 +127,7 @@ jobs:
       github.event_name == 'pull_request_target'
       || (github.event_name == 'workflow_run'
           && github.event.workflow_run.conclusion == 'success')
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04-arm
     timeout-minutes: 5
     steps:
       - name: Download triage event artifact

.github/workflows/pr-triage-collect.yml

@@ -47,7 +47,7 @@ jobs:
       github.event_name == 'pull_request_review'
       || (github.event_name == 'issue_comment'
           && github.event.issue.pull_request != null)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04-arm
     timeout-minutes: 2
     steps:
       - name: Upload event payload