Bump slackapi/slack-github-action from 1.26.0 to 1.27.0

Bumps [slackapi/slack-github-action](https://github.com/slackapi/slack-github-action) from 1.26.0 to 1.27.0.
- [Release notes](https://github.com/slackapi/slack-github-action/releases)
- [Commits](slackapi/slack-github-action@v1.26.0...v1.27.0)

---
updated-dependencies:
- dependency-name: slackapi/slack-github-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/deploy_helm_chart.yml

@@ -331,7 +331,7 @@ jobs:
           echo "LAST_COMMIT_MSG=$LAST_COMMIT_MSG" >> $GITHUB_ENV
 
       - name: Send notification
-        uses: slackapi/slack-github-action@v1.26.0
+        uses: slackapi/slack-github-action@v1.27.0
         id: send_notification
         if: ${{ fromJson( inputs.slack_notification_enabled ) }} 
         with:
@@ -417,7 +417,7 @@ jobs:
 
       - name: Update notification
         if: ${{ always() && fromJson( inputs.slack_notification_enabled ) }}
-        uses: slackapi/slack-github-action@v1.26.0
+        uses: slackapi/slack-github-action@v1.27.0
         with:
           channel-id: ${{ inputs.slack_channel_id }}
           update-ts: ${{ steps.send_notification.outputs.ts }}