⬆️ Bump slackapi/slack-github-action from 2.0.0 to 2.1.0 (#10)

Bumps [slackapi/slack-github-action](https://github.com/slackapi/slack-github-action) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/slackapi/slack-github-action/releases)
- [Commits](slackapi/slack-github-action@v2.0.0...v2.1.0)

---
updated-dependencies:
- dependency-name: slackapi/slack-github-action
  dependency-version: 2.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

action.yml

@@ -51,7 +51,7 @@ runs:
 
     - name: Post message to ${{ inputs.slack-channel-name }} Slack channel
       if: success()
-      uses: slackapi/slack-github-action@v2.0.0
+      uses: slackapi/slack-github-action@v2.1.0
       with:
         payload-file-path: './flaky_tests.json'
         webhook: ${{ inputs.slack-incoming-webhooks-url }}