Typo in Slack release action preventing it to work

Hello,

In

Line 140 in 1cec2f2

SLACK_CUSTOM_PAYLOAD: ${{ steps.blocks.output.json }}

... output should be outputs. I believe this is why I got an empty SLACK_CUSTOM_PAYLOAD in a release workflow, https://github.com/LedgerHQ/dnswatcher/actions/runs/8357761357/job/22879739075

There could also be an issue with $JSON in the build step... Would it be possible to add echo "$JSON" at the end, to display this variable in the GitHub Actions logs? i.e. right after:

actions/slack/release/action.yml

Lines 126 to 129 in 1cec2f2

    
                   # Only way to return multiline output 
        
                   echo "json<<JSON" >> $GITHUB_OUTPUT 
        
                   echo "$JSON" >> $GITHUB_OUTPUT 
        
                   echo "JSON" >> $GITHUB_OUTPUT

	# Only way to return multiline output
	echo "json<<JSON" >> $GITHUB_OUTPUT
	echo "$JSON" >> $GITHUB_OUTPUT
	echo "JSON" >> $GITHUB_OUTPUT