ci: bump auto-label-merge-conflicts commit hash (#21704)

* fix: replace broken mschilde action with eps1lon in label-conflicts workflow

mschilde/auto-label-merge-conflicts uses a Docker-based action where
node:alpine no longer ships yarn, causing the build to fail. Replaced
with eps1lon/actions-label-merge-conflict@v3.0.3 (JS-based, no Docker).
Also added pull_request trigger alongside pull_request_target.

* update the hash

* trigegr:ci

* add pull_request event types to label conflicts workflow

* remove pr event

Author: bhimrazy

.github/workflows/label-conflicts.yml

@@ -14,7 +14,7 @@ jobs:
   triage-conflicts:
     runs-on: ubuntu-latest
     steps:
-      - uses: mschilde/auto-label-merge-conflicts@591722e97f3c4142df3eca156ed0dcf2bcd362bd # Oct 25, 2021
+      - uses: mschilde/auto-label-merge-conflicts@cd484bbf0476fbe79474a937681a253e094cac3d # May 9, 2026
         with:
           CONFLICT_LABEL_NAME: "has conflicts"
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}