Task: Send selected GitHub events to Slack

n8n workflow JSON:
{"nodes":[{"name":"Github Trigger","type":"n8n-nodes-base.githubTrigger","position":[500,350],"parameters":{"owner":"n8n-io","events":["star"],"repository":"n8n"},"credentials":{"githubApi":""},"typeVersion":1},{"name":"IF","type":"n8n-nodes-base.if","position":[700,350],"parameters":{"conditions":{"string":[{"value1":"={{$node[\"Github Trigger\"].data[\"body\"][\"action\"]}}","value2":"created"}]}},"typeVersion":1},{"name":"Slack - Add","type":"n8n-nodes-base.slack","position":[900,250],"parameters":{"channel":"#general","attachments":[{"text":"=The project has now: {{$node[\"Github Trigger\"].data[\"body\"][\"repository\"][\"stargazers_count\"]}} Stars","color":"#88FF00","title":"=Got new star from: {{$node[\"Github Trigger\"].data[\"body\"][\"sender\"][\"login\"]}}","image_url":"={{$node[\"Github Trigger\"].data[\"body\"][\"sender\"][\"avatar_url\"]}}","title_link":"={{$node[\"Github Trigger\"].data[\"body\"][\"sender\"][\"html_url\"]}}"}],"otherOptions":{}},"credentials":{"slackApi":""},"typeVersion":1},{"name":"Slack - Remove","type":"n8n-nodes-base.slack","position":[900,450],"parameters":{"channel":"#general","attachments":[{"text":"=The project has now: {{$node[\"Github Trigger\"].data[\"body\"][\"repository\"][\"stargazers_count\"]}} Stars","color":"#ff0000","title":"=Star got removed by: {{$node[\"Github Trigger\"].data[\"body\"][\"sender\"][\"login\"]}}","image_url":"={{$node[\"Github Trigger\"].data[\"body\"][\"sender\"][\"avatar_url\"]}}","title_link":"={{$node[\"Github Trigger\"].data[\"body\"][\"sender\"][\"html_url\"]}}"}],"otherOptions":{}},"credentials":{"slackApi":""},"typeVersion":1}],"connections":{"IF":{"main":[[{"node":"Slack - Add","type":"main","index":0}],[{"node":"Slack - Remove","type":"main","index":0}]]},"Github Trigger":{"main":[[{"node":"IF","type":"main","index":0}]]}}}