Bump ccxt to 1.81.43

fixes bug in okx live liquidation pricing

freqtrade/freqtradebot.py

@@ -1578,7 +1578,6 @@ class FreqtradeBot(LoggingMixin):
                 # TODO: Margin will need to use interest_rate as well.
                 # interest_rate = self.exchange.get_interest_rate()
                 trade.set_isolated_liq(self.exchange.get_liquidation_price(
-
                     leverage=trade.leverage,
                     pair=trade.pair,
                     amount=trade.amount,

requirements.txt

@@ -2,7 +2,7 @@ numpy==1.22.3
 pandas==1.4.2
 pandas-ta==0.3.14b
 
-ccxt==1.81.16
+ccxt==1.81.43
 # Pin cryptography for now due to rust build errors with piwheels
 cryptography==37.0.1
 aiohttp==3.8.1