chore(deps): update slackapi/slack-github-action action to v3 (channels/6.0/stable)#1012

renovate[bot] wants to merge 1 commit intochannels/6.0/stablerockcrafters/dotnet:channels/6.0/stablefrom

renovate/channels/6.0/stable-slackapi-slack-github-action-3.xrockcrafters/dotnet:renovate/channels/6.0/stable-slackapi-slack-github-action-3.xCopy head branch name to clipboard