chore(deps): update peter-evans/repository-dispatch action to v4

Author: renovate[bot]

.github/workflows/sync-docs.yml

@@ -10,13 +10,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Repository Dispatch
-        uses: peter-evans/repository-dispatch@ff45666b9427631e3450c54a1bcbee4d9ff4d7c0 # v3
+        uses: peter-evans/repository-dispatch@5fc4efd1a4797ddb68ffd0714a238564e4cc0e6f # v4
         with:
           token: ${{ secrets.PAT }}
           repository: Kong/docs.konghq.com
           event-type: PLUGINS_UPDATED
       - name: Repository Dispatch
-        uses: peter-evans/repository-dispatch@ff45666b9427631e3450c54a1bcbee4d9ff4d7c0 # v3
+        uses: peter-evans/repository-dispatch@5fc4efd1a4797ddb68ffd0714a238564e4cc0e6f # v4
         with:
           token: ${{ secrets.PAT }}
           repository: Kong/developer.konghq.com