chore: update slackapi/slack-github-action action to v1.27.1

Author: renovate[bot]

.github/workflows/MERGE_DEVELOP_TO_V2.yml

@@ -25,7 +25,7 @@ jobs:
 
       - name: Notify failure on Slack
         if: failure()
-        uses: slackapi/slack-github-action@v1.15.0
+        uses: slackapi/slack-github-action@v1.27.1
         with:
           channel-id: ${{ secrets.SLACK_CHANNEL_ID }}
           slack-message: 'Automatic merge of <https://github.com/${{ github.repository }}/tree/${{ github.ref }}|${{ github.ref }}> to <https://github.com/${{ github.repository }}/tree/v2|${{ github.repository }}#v2> failed.'

.github/workflows/MERGE_MASTER_TO_DEVELOP.yml

@@ -25,7 +25,7 @@ jobs:
 
       - name: Notify failure on Slack
         if: failure()
-        uses: slackapi/slack-github-action@v1.15.0
+        uses: slackapi/slack-github-action@v1.27.1
         with:
           channel-id: ${{ secrets.SLACK_CHANNEL_ID }}
           slack-message: 'Automatic merge of <https://github.com/${{ github.repository }}/tree/${{ github.ref }}|${{ github.ref }}> to <https://github.com/${{ github.repository }}/tree/develop|${{ github.repository }}#develop> failed.'