Fixing issue with slack notification

[nr-rkallempudi]

Summary

Fixes GitHub Actions output format error in the merge_to_main.yml workflow that was preventing Slack notifications from being sent when releases are published.

Problem

The notify job was failing with:

Error: Unable to process file command 'output' successfully.
Error: Invalid format 'fb-windows-4.2.2-amd64.zip'

This occurred because:

1. Multiline output issue: The artifacts list was using join("\n") to create newline-separated values, but was using the old echo "artifacts=$ARTIFACTS" format which doesn't support multiline values in GitHub Actions
2. Invalid JSON in Slack payload: Even if the multiline output worked, embedding newlines directly into JSON string values is invalid and would cause the Slack webhook to fail

Solution

Changed the artifact list format from newline-separated to comma-separated:

• Modified join("\n") to join(", ") in the jq command
• This creates a single-line output that:
  • ✅ Works with the simple echo "artifacts=$ARTIFACTS" format
  • ✅ Generates valid JSON for the Slack payload
  • ✅ Displays cleanly in Slack notifications as a comma-separated list

[nr-rkallempudi]

@copilot

[Copilot]

@nr-rkallempudi I've opened a new pull request, #233, to work on those changes. Once the pull request is ready, I'll request review from you.