build(deps): bump slack-sdk from 3.15.2 to 3.19.3 in /.github/actions/pr_notifier#138

dependabot[bot] wants to merge 1 commit intomainabeyad/envoy:mainfrom

dependabot/pip/dot-github/actions/pr_notifier/slack-sdk-3.19.3abeyad/envoy:dependabot/pip/dot-github/actions/pr_notifier/slack-sdk-3.19.3Copy head branch name to clipboard