build(deps): bump slack-sdk from 3.19.5 to 3.21.1 in /.github/actions/pr_notifier#200

dependabot[bot] wants to merge 1 commit intomasterjespersoderlund/envoy:masterfrom

dependabot/pip/dot-github/actions/pr_notifier/slack-sdk-3.21.1jespersoderlund/envoy:dependabot/pip/dot-github/actions/pr_notifier/slack-sdk-3.21.1Copy head branch name to clipboard