fix : <trading-bot.yml> adding the heartbeat discord key webhook to the env for the github actions in order to use it for printing bot status

Author: Willi363363

.github/workflows/trading-bot.yml

@@ -39,6 +39,7 @@ jobs:
       - name: 🤖 Exécution du bot
         env:
           DISCORD_WEBHOOK_URL: ${{ secrets.DISCORD_WEBHOOK_URL }}
+          DISCORD_HEARTBEAT_WEBHOOK_URL: ${{ secrets.DISCORD_HEARTBEAT_WEBHOOK_URL }}
           SYMBOL: 'BTC/USDT'
           TIMEFRAME: '5m'
           SEND_HEARTBEAT: 'true'